After witnessing the widespread destruction that the "End of the Earth" caused, Yuri decides to hide Conrad's arm, which is the key of the one of the four Forbidden Boxes. After learning that the world's best fighting event is actually fixed by Big Cimaron, Yuri and his group set off to participate. Power struggles emerge during the competition as Maxine takes Flynn as her hostage, and demands that Yuri forfeit. With the competition locked in a tie, Big Cimaron sends out a surprise player against Yuri in the championship game.