Hiro Sakurai wakes in a derelict courthouse with his hands cuffed and a heavy rabbit mask fixed over his face, among eight other masked teenagers, one of them already dead. Each mask assigns its wearer one of the seven deadly sins, and a recorded voice lays out the rules of a game called Judge: every twelve hours the survivors vote to sacrifice one of their own, and only four will walk out. Marked by the rabbit for envy, Hiro starts working out who the others are and what brought each of them here.