Yoshi has a problem in his legs, and needs to be kept in a wheelchair. It is unknown what problem he has or how did he get like that, but he now needs to undergo a surgery. However, he has no courage to do it. So, he makes a promise with Crow: if Crow is able to win the [[D1GP]], Yoshi won't back out to of his operation. Crow accepts it, and enters the D1GP, aiming to become the Riding Duel Emperor, for the sake of Yoshi.