The Daihasei Festival may be all fun and games (and explosions), but the chaos of the competition also serves as a distraction. A dank conspiracy lurks behind the event, and it ensnares one of Misaka's "sisters." When Misaka tries to investigate, the enemy proves to be more complicated–and ruthless–than she first guesed. Judgment is cripped. Misaka's back may be up against a wall, but some of her other friends prove to be powerhouses in their own right.