The cause seems to be from the "World Doomsday Game" started by the staff from the future. In light of this crisis, the mysterious Cross Geats appears. Just what will happen to Ace and his friends?

Sarami, a new game navigator who looks exactly like Sara Sakurai, invites Ace Ukiyo, Keiwa Sakurai, Neon Kurama, Michinaga Azuma and Tsumuri to the Desire Grand Prix's Bonus Stage. With everyone ...