High school student Shun Takahata is bored. Bored with the day-to-day monotony of school and life, he prays for change, for something exciting. Suddenly, he and his classmates are forced to play deadly children's games and facing terrifying creatures from a talking Daruma doll to a sharp-clawed lucky cat.

Minako and Mayuko are rival members of their high school's karate club. While staying at a training camp boarding house, one of the other members, Saori, starts to lose her mind overnight. When one of the 10 staff members of the training camp vanishes, Minako starts to investigate the cause...