{{Episode summary|In order to take back one of his important keys, a [[Sartorius]] struck by [[Jaden YukiThe Light of Destruction]] faces off once again sends in an assassin against Judai. The assassin is [[Dr. Eisenstein]], another of a genius physics expert with a deck made logically–[[SartoriusJaden Yuki|Jaden]]'s enforcers, in weakest point of all. Eisenstein activates his "[[Relativity Field]]" to start things off. He then summons a Duel Monster that tests his luck against his opponentnegates Jaden's logic[[Fusion]], his forte, gaining an edge as the Duel unfolds.}}

At the lakeside of the [[Obelisk Blue|Obelisk White]], an upset [[Bastion Misawa]]throws rocks into the water, wondering how long it has been since he was shining as the best student in the [[Duel Academy]] [[Yu-Gi-Oh! GX - Episode 001|entrance exams]]. He is upset that no one is respecting [[Jaden Yuki]] (who was student #110 during the exams) was outshining him after , so he joined the [[Society of Light]], but he didn't receive any respect from his peers. As Bastion despairs and that wonders if he will ever shine again, a fit of laughter from behind him draws his logical knowledge keeps failing himattention to an elderly man in a laboratory coat. The elderly man tells Bastion the universe is shining, gets reinspired and when he meets [[Dr. Eisenstein]]asks him why, he answers that it was forged in a famous Dueling astrophysicistlogical fashion, hired by which is what makes it beautiful. Bastion is taken aback and tells the elderly man that he built his [[SartoriusDeck]] s logically, but states that Decks who rely on luck are the ones that shine in Duel Academy. The elderly man answers it is because Bastion's Decks has yet to be ''truly'' logical and says that "God is never one to play dice". Bastion repeats the quote and [[Prince Ojin]] wonders to Duel [[himself if that is why Jaden Yuki]] is wrong to rely on drawing odds. When looks up, the elderly man is gone. Bastion wonders if the elderly man is God and reobtain his [[satellite key]]runs around the lake, calling out for God. Eisenstein quickly falls In actuality, the elderly man slipped backward and fell into a crevasse, but Bastion doesn't see it, causing him to believe Eisenstein where he was just a vision, and he runs off excitedpreviously standing.

MeanwhileIn [[Sartorius]]' chambers, he and [[Syrus TruesdalePrince Ojin]] is examine The Hermit Tarot card in its upright position. Sartorius asks Ojin if ''he'' would arrive, to which Ojin answers "yes". Ojin informs him that their expectant arrival was granted the Nobelly Prize by his royal family for the highest award for highest intelligence. He gives Satorius a clipboard of the hospitalDueling Physicist, recovering from his Duel with his brother [[Zane Truesdale|ZaneDr. Eisenstein]], when he and Jaden hear an announcement over who is revealed to be the Pelderly man who spoke to Bastion earlier.AOjin continues informing Sartorius that Dr. system that Jaden Eisenstein holds the most logical mind and has won the prize in Dueling Physics field for the past ten years. He describes Eisenstein as someone who would travel to take a physics pop quiz. Being the testends of the Earth to defeat any opponent if it would prove his self-hater proposed Grand Unified Duel Theory. Sartorius expects that he is, Eisenstein would break through [[Jaden is reluctant to go through with it. Three students, including Yuki]]'s miraculous draws and retrieve his [[Tyranno HassleberrySORA's keys|satellite key]], enter to escort Jaden ... the key to the classroomvery ''fate'' of the world.

HoweverMeanwhile, in the "announcement" Duel Academy infirmary, Jaden visits [[Syrus Truesdale]], who is recovering after being hospitalized [[Yu-Gi-Oh! GX - Episode 095|following his Duel]] with his brother [[Zane Truesdale|Zane]]. Jaden compliments Syrus for staying tough and respecting his opponent until the end. Syrus thanks Jaden and asks him where Zane is; Jaden answers that Zane walked away after the Duel and didn't know where he was merely a recording . Suddenly, the voice of [[Dr. Vellian Crowler]]comes on the Duel Academy PA system, announcing that Jaden has a make-up physics exam and must report to the physics room. The voice is revealed to be a recording of Crowler's voice, played back over the P.A. system by Prince Ojin, who tells Sartorius that everything is now in order and laughs while stationed inside his helicopter. And when Syrus assures a shocked Jaden enters the classroom, he discovers that he is alone, until Drwill be all right and urges Jaden to make up his exam. Eisenstein appears on the stage before Jaden shakes his head and asks why he needs to make up an exam since no one told him. Bastion is also tucked away behind a deskThe doors to the infirmary open and [[Tyranno Hassleberry]], along with two [[Slifer Red]] students, out of enter. When Jadenasks Hassleberry what's sightup, Hassleberry tells him that he and overhears the other students don't want him to fail. Jaden asks Hassleberry if the exam seems suspicious, but Syrus points out that they will Duelheard the announcement. He thinks Hassleberry urges him to take the exam; one of the Slifer Reds calls Jaden the shining star of their dorm, while the other student tells Jaden doesnhe can't stand a chancehave them failing the other Slifer Red students. HoweverSyrus watches as Jaden is escorted out of the infirmary, Dr. Eisenstein spots him, and thinks to himself despite protests that he can help him rediscover they were in the principles middle of scientific Duelingthe [[Genex Tournament]].

DrJaden, Hassleberry, and the two Slifer Red students arrive at the physics room and push Jaden inside the dark room. Eisenstein uses Hassleberry tells Jaden to do his logical Dueling knowledge best as the doors close, much to overpower the latter's chagrin. As Jadennotices that no one is in the room, balancing the power of overhead spotlight is turned on and reveals Dr. Eisenstein, who reveals that he called Jaden to Duel him as he lays down his laboratory coat and activates his [[Monster Cards|monstersDuel Disk]]. Jaden is overjoyed to see that it wasn't a make-up exam that he was taking, unaware that Basion was hiding nearby, who is shocked to finally recognize Dr. Eisenstein. While folding up his laboratory coat, Dr. Eisenstein lectures that Dueling is comprised of many logical ideals, including arithmetic, physics, and chemistry, and the things that make up Dueling also influence physics. Jaden replies that it takes more than logic to win a Duel and it all comes down to whether or not a Duelist's heart is connected with his Deck. Dr. Eisenstein replies that it is merely a coincidence and vows to correct Jaden's misconception. Eisenstein spots Bastion hiding and recognizes him from earlier and silently vows to make Bastion a witness to him proving his Grand Unified Duel Theory. Bastion notes that the Duel between Jaden and Dr. Eisenstein will help him find a hint to make him shine. Jaden activates his Duel Disk and the Duel begins. Dr. Eisenstein makes the first turn, draws, and [[Spell Card|Spellsactivate]] and s the [[Trap Field Spell Card|Traps]] to deal significant , "[[damageRelativity Field]] to Jaden. But Jaden", who believes that he'll keep drawing which transforms the cards he needs, manages to come out on top with a strong counterattack. Upon defeat, Eisenstein is convinced that faith in chance can help win a Duelentire physics room into outer space.

With Outside of the physics room, Hassleberry and Crowler waiting the two Slifer Red students sit outside watchingthe door, completely unaware of what's happening inside. Hassleberry writes on the palm of his hand while vowing to help him cheat if necessary. At that point, Jaden is happy Vellian Crowler approaches them and angrily inquires if they are talking about cheating. Hassleberry explains to report Crowler that he passed they are there to cheer for Jaden for his pop quizmake-up physics exam. Then Crowler reminds him explains that no one is giving classes or all of the tests while were postponed to the [[Genex Tournament]] . The bewildered Hassleberry asks Crowler about the announcement he made, to which Crowler replies that he made no announcement. When they open the door, Crolwer, Hassleberry, and the two Slifer Red students scream when they discover the physics room is still in progresstransformed into outer space. Dr. Eisenstein ends his turn, much to Jaden realizes 's shock. Bastion admires the beautiful universe that he was tricked into Dueling Eisensteincreated, a world where Jaden's miracles would be for naught.

Jaden draws and activates the [[Spell Card]] "[[Polymerization (anime)|Polymerization]]", fusing "[[Elemental Hero Avian (anime)|Elemental Hero Avian]]" with "[[Elemental Hero Burstinatrix (anime)|Elemental Hero Burstinatrix]]" in his [[hand]] to [[Fusion Summon]] "[[Elemental Hero Flame Wingman (later anime)|Elemental Hero Flame Wingman]]". In response to this, Dr. Eisenstein activates the effect of his "[[Singularity Fiend (anime)|Singularity Fiend]]" in his hand since Jaden [[Special Summon]]ed a monster, [[discard]]ing it and a [[Spell Card]] ("[[A Feather of the Phoenix (anime)|A Feather of the Phoenix]]") to negate "Flame Wingman's" Special Summoning and [[destroy]] it. "Flame Wingman" is encased in a green aura and is shattered. Jaden [[Set]]s two cards face-down and ends his turn. Bastionnotes that Jaden was put at a disadvantage by losing his ability to Fusion Summon and his Fusion Monster, howeverwhich puts him behind Dr. Eisenstein. He wonders if Dr. Eisnstein is planning to prevent Jaden from Fusion Summoning. Dr. Eisten draws and activates "[[Schrödinger's Cat]]" and then activates "[[Pot of Greed (anime)|Pot of Greed]]" to draw two cards. This activates the effect of "Schrödinger's Cat" since Dr. Eisenstein drew cards outside of the [[Draw Phase]], allowing him to take the cards he drew, [[shuffle]] them into his Deck, and draw the same amount of cards. Bastion notes that drawing is still inspired a world of unknown chance until one opens the lid, but the effect of "Schrödinger's Cat" allows Dr. Eisenstein to improve his chances. Dr. Eisenstein Sets a card face-down and [[Normal Summon]]s "[[Laplace the Fiend Mathematician]]" in [[Attack Mode]]. Dr. Eisenstein orders "Laplace" to attack Jaden directly, but Jaden activates his Set [[Trap Card]], "[[A Hero Emerges (anime)|A Hero Emerges]]", much to Dr. Eisenstein's shock. Jaden orders Dr. Eistenstein to choose the random card in his hand, but happily points out that he has only one card in his hand. Jaden Special Summons "[[Elemental Hero Neos (anime)|Elemental Hero Neos]]" via the effect of "A Hero Emerges". Dr. Eisenstein ends his attack. He Sets a card face-down and activates the Spell Card "[[Dimensionhole (anime)|Dimensionhole]]". A ripple effect occurs underneath "Laplace" and spreads throughout the field as the effect of "Dimensionhole" [[banish]]es "Laplace" until his next [[Standby Phase]]. As "Laplace" disappears, its effect now activates since it left the field, inflicting 300 damage to Jaden for each card on the field. Bastion counts "Relativity Field" along the other five cards on the field, adding up to a total of 1800 points. A red aura envelops Jaden, causing him to scream as his [[Life Point]]s were reduced from 4000 to 2200. The effect of "Relativity Field" then activates, causing the ATK of "Neos" to be reduced equal to the amount of Life Points that Jaden lost. A red aura envelops "Neos", causing it to writhe in pain as its 2500 ATK is reduced by 2200 to 300 ATK. Dr. Eistenstein then activates his Set Spell Card "[[Dark Hole (anime)|Dark Hole]]", which allows him to destroy all monsters on the field. A black hole appears over the field, which causes a similar red aura plus electrical bolts to envelop "Neos" before it is shattered. Dr. Eisenstein explains to Jaden that by relying on the coincidence of drawing, he completely neglected logic and this strategy would be useless in his world before ending his turn. Jaden rebukes that drawing is not about coincidence, but rather a miracle that can occur when a Duelist's heart is connected with their ''[[Duel Monsters]]'' and vows to draw a miracle and take down Dr. Eisenstein.  Nearby, one of the two Slifer Red students grasps his throat and says it's hard to breathe, while the other Slider Red student adds that there is no space in outer space before leaving Hassleberry and Crowler. As Jaden declares his draw, Dr. Eisenstein activates his Set [[Continuous Trap Card]], "[[Draw Paradox]]", which prevents the turn player from conducting their Draw Phase while their opponents are allowed to draw a card during the same Draw Phase. Dr. Eisensteindraws a card during Jaden's Draw Phase. Bastion notes that Jaden is unable to make a move for this turn since he has no cards in his hand, adding that there is no flaw in Dr. Eisenstein's logic. Jaden sadly declares the end of his turn. Dr. Eisenstein declares it is his turn and explains that the effect of his "Draw Paradox" allows Jaden to draw a card during his Draw Phase. Dr. Eisenstein explains the effect of his "Dimensionhole" he activated during his previous turn will return "Laplace" to his field during his Standby Phase. The same ripple effect occurs and "Laplace" materializes in the same zone he was placed in. Dr. Eisenstein points out that physics is not Jaden's forte and offers to lecture him on the theory that beautifully unifies the worlds within every universe. Jaden does not want to receive a lecture in the middle of a Duel, but Dr. Eisenstein insists. Bastion listens intently (and notes the good luck of hearing the lecture) while Dr. Eisenstein quizzes Jaden about the three forces that make up Dueling. As Jaden struggles to find the answer, Dr. Eisenstein answers that the three forces are [[Monster Card]]s, so Spell Cards, and Trap Cards. Dr. Eisenstein explains that he strips is working on a theory that unifies all three forces and has finally finished it. He activates the Spell Card "[[Battle Constant]]", allowing him to banish "Laplace" (a Monster Card), "Schrödinger's Cat" (a Continuous Spell Card), and "Draw Paradox" (a Continuous Trap Card). As the three cards disappear, the effect of "Laplace" activates and resolves since it leaves the field, inflicting 300 damage to Jaden for each card on the field. With four cards on the field (including "Schrödinger's Cat" and "Draw Paradox", which were on the field as the effect of "Laplace" activates and resolves before they were banished) and Jaden's face-down card, "Laplace" inflicts 1200 damage to Jaden. The same red aura envelops Jaden and runs after causes himto scream as his 2200 Life Points are reduced to 1000. Dr. Eisenstein activates the effect of "Battle Constant" since he banished the required cards, wanting allowing him to become Special Summon "[[Brain Dragon]]" from his apprenticehand or Deck. A bright light flashes behind Dr. Eisenstein as a flare takes the form of "Brain Dragon". Dr. Eisenstein orders "Brain Dragon" to attack Jaden directly. Jaden remarks how he is bad at physics as he hears the voice of [[Winged Kuriboh (character)|Winged Kuriboh]]. He finds activates his Set [[Quick-Play Spell Card]] "[[The Flute of Summoning Kuriboh (anime)|The Flute of Summoning Kuriboh]]", allowing him to Special Summon "[[Winged Kuriboh (later anime)|Winged Kuriboh]]" in [[Defense Position]]. "Brain Dragon" shoots a breath of fire toward "Winged Kuriboh" and destroys it. Jaden explains the effect of "Winged Kuriboh", which prevents him from taking [[battle damage]]. Dr. Eisensten replies that the "friendship" Jaden shares with his monsters will lead him to a narrow path of survival. Jaden looks at his Duel Disk and thanks Winged Kuriboh, to which the monster spirit happily acknowledges. Dr. Eisenstein points out that the impossibility for Jaden to reverse the situation with one card and tells himthat "God is not one to play dice". Bastion agrees with Dr. Eisenstein since Jaden has played with dice all the time and continues to win, but this time itseems his luck runs out. Jaden draws and subsequently Normal Summons "[[Elemental Hero Bubbleman (anime)|Elemental Hero Bubbleman]]". Jaden activates the effect of "Bubbleman" since he controls no other cards on his field, allowing him to draw two cards. As Jaden examines his cards (among them being "[[Bubble Blaster (anime)|Bubble Blaster]]", "[[Hero Dice]]", and "[[Neo-Spacian Glow Moss (anime)|Neo-Spacian Glow Moss]]"), he realizes that the bonds with his monsters haven't left him yet. Jaden [[equip]]s "Bubbleman" with the [[Equip Spell Card]], "Bubble Blaster", increasing "Bubbleman's" ATK by 800, raising its 800 ATK to 1600. Jaden then activates the Spell Card "Hero Dice". As a large pink die materializes, Jaden target "Bubbleman" and rolls a die, and he can activate an effect that depends on the result. The number "1" appears under Jaden, the number "2" appears under "BUbble Blaster", the number "3" appears under "Bubbleman", the number "4" appears under "Brain Dragon", the number "5" appears under "Relativity Field", and the number "6" appears under Eisenstein. As Jaden orders his "Hero Dice" to roll, a head pops out of the singular pip, a pair of arms pop out from the corner dots of the corners of the third and fourth pips, and a rocket boosts from the six pips. The die reverts to its normal form and rolls before it rolls a six. The number "6" underneath Dr. Eisenstein glows, much to his shock. Jaden explains the effect of the sixth effect of "Hero Dice", allowing "Bubbleman" to attack Dr. Eistenstein directly. Jaden orders "Bubbleman" to attack directly, to which the monster shoots a stream of bubbly water with its "Bubble Blaster", splashing Dr. Eisenstein with a fountain of bubbles and water and reducing his 4000 Life Points to 2400. The effect of "Relativity Field" then activates, causing the ATK of "Brain Dragon" to be reduced equal to the amount of Life Points that Dr. Eisenstein lost. A purple aura envelops "Brain Dragon", causing it to roar in pain as its 2800 ATK is reduced by 2800 to 1200 ATK. Dr. Eisenstein slips and falls on his behind. Jaden asks if Dr. Eisenstein is alright; the latter rants to Jaden if he thinks he's won before his false teeth fall out mid-rant before quickly reinserting them in his mouth, causing Jaden to grimace. Dr. Eisenstein whose faith draws and activates the effect of "Brain Dragon", allowing him to draw two new cards and select two cards from his hand and return the, to the top of his Deck in any order he chooses. He draws "[[Double Spell (later anime)|Double Spell]]" and "[[Mystical Space Typhoon (anime)|Mystical Space Typhoon]]", with the only card in logic his hand being "[[Non-Fusion Area (anime)|Non-Fusion Area]]". Dr. Eisenstein notes the latter card and notes that Jaden has been one card in his hand; he requires three cards to be used to [usion Summon a monster, giving him one more turn to spare. He returns "Double Spell" and "Non-Fusion Area" to the top of his Deck in that order and activates "Mystical Space Typhoon", allowing him to destroy a Spell or Tap card on the field. As the card materializes, a powerful gust of wind bellows, destroying "Bubbleman" and returning "Bubbleman's" 1600 ATK to 800. Dr. Eisenstein orders "Brain Dragon" to attack with "Big Bang Brainstorm". The monster shoots a breath of fire toward "Bubbleman" and destroys it, causing an explosive force that causes Jaden's Life Points to be reduced from 1000 to 600. Dr. Eisenstein chuckles, asks Jaden if he is alright, and suggests that Jaden will surrender since he believes the outcome of the Duel. Jaden laughs, remarking how Dr. Eisenstein was worried about him and how the Duel was becoming fun. Jaden draws a card, Normal Summons "Neo-Spacian Glow Moss" in Attack Position, and then activates the Spell Card, "[[O - Oversoul (anime)|O - Oversoul]]". As a purple letter "O" materializes into a larger size upon activation, Jaden explains that he can Special Summon "Elemental Hero Neos" from his Graveyard in Attack Position. Crowler, Hassleberry, and Bastion watch on with shock right before Jaden orders "Neos" and "Glow Moss" to perform [[Contact Fusion]], allowing him to Fusion Summon "[[Elemental Hero Glow Neos (anime)|Elemental Hero Glow Neos]]" in Attack Position. Dr. Eisenstein is shocked, wondering if this is a miracle before Jaden explains the effect of "Glow Neos", allowing it to destroy a card on the opponent's field and apply an effect, based on the destroyedcard's [[card type|type]]. Jaden declares he is going to destroy "Relativity Field". As Jaden declares "Signal Buster", "Glow Neos" conjures up a red, yellow, and green sphere before throwing it on Dr. Bastion refuses Eisenstein's field, causing an explosive force that causes him and "Brain Dragon" to give scream. The [[Field Spell Zone]] on Dr. Eisenstein's Duel Disk opens upand the "relativity FIeld" card disappears. At that moment, a great burst of light destroys the Field Spell, shocking Dr. Eisenstein as his "beautiful universe" is destroyed. Within the light, Jaden explains that since "Glow Neos" destroyed a Spell Card, looking it can attack Dr. Eisenstein directly. Jaden declares a direct attack with "Lightning Strike", and "Glo Neos" conjures up into a spear made of light and throws it at Dr. Eisenstein, creating an explosive force. Dr. Eisenstein yells that he was guaranteed to have a turn to spare as his Life Points drop to 0, winning Jaden the Duel.  As the skyholograms fade, Dr. Eisenstein falls to his knees and declares it was 99.99% impossible, then back to which Jaden replies that it is what makes Dueling interesting. Jaden assumes his usual victory pose, pointing at him with two fingers and saying "Gotcha!", telling Dr. Eisenstein the Duel was really interesting. A crestfallen Dr. Eisenstein wonders if his Grand Unified Dueling Theory is incomplete or if Jaden is a being that surpasses all logic. Back in Sartorius' chambers, The Hermit Tarot card representing Dr. Eisensteinfalls on the floor. Sartorius notes how Dr. Eisenstein is unable to defeat Jaden and retrieve his key. Ojin offers to retrieve the key, telling Sartorius there is more to his family's Deck than his [[OTK|One-Turn Kill]] strategy. Sartorius flips over the top card of the Deck, which is revealed to be The Emperor Tarot card. He notes how Jaden may be immune to the very logic that unifies the universe, but he will never stir his Wheel of Fortune (in the dub, Sartorius tells Ojin there is no need since his backup plan is already in effect). Jaden excitedly holds up two fingers in a "V"-shaped victory pose and declares he has aced his make-up physics exam. But once againCrowler rebukes Jaden, telling him that his make-up exams are held at the end of the Genex Tournament. Shocked, Jaden asks if the Duel was his make-up exam, which Crowler confirms that hemade no such announcement before. After Jaden recalls hearing Crowler's gonevoice on the PA system, he realizes he has been tricked into Dueling Dr. Eisenstein and wonders who. Inside the physics room, Bastion contemplates before he declares "Eureka!", realizing that he no longer needs his uniform to shine before he strips himself of his clothing. Jaden, Crowler, and Hassleberry look in shock as Bastion runs out of the room and through the halls of Duel Academy naked (in the dub, convincing Bastion is given a pair of shorts to cover up his nudity). As he runs outside of Duel Academy, he realizes that Dr. Eisenstein is right: Dueling ''is'' beautiful, which defines the logical Deck that he really spoke about before and Jaden's miraculous draws - ''logic'' and ''intuition''. It is because of Dueling that unifies these two contradictories. Bastion locates Dr. Eisenstein at the cliffside near the Slifer Red dorm, downcast by how his Grand Unified Duel Theory was defeated by Jaden. Dr. Eisenstein urges Bastion to find a visionnew theory; Bastion replies that he will perfect his own Unified Duel Theory. He looks up to the sky and declares when he's perfected it, when he will shine brightly in realitythe universe. He looks back down and is shocked to see Dr. Eisenstein has disappeared. Bastion declares with teary eyes that Dr. Eisenstein is his own God. In actuality, he simply fell Dr. Eisensten slipped off his the cliff onto and fell on a small rockbelow.

Jaden draws "[[Elemental Hero Bubbleman (anime)|Elemental Hero Bubbleman]]" and subsequently Normal Summons it (800/1200) in Attack Position. Since Jaden summoned "Bubbleman" while he had no cards on his side of the field, its second effect activates, allowing Jaden to draw two cards ("[[Neo-Spacian Glow Moss (anime)|Neo-Spacian Glow Moss]]" and "Hero Dice").<ref group=Notes name=bubble>In the ''[[OCG]]''/''[[TCG/OCG]]'', this effect of "[[Elemental HERO Bubbleman|Elemental Hero Bubbleman]]" can only [[resolve]] when it is the only card in the player's [[hand]] and on his/her side of the [[Playing Field|field]] when he is Summoned.</ref>