After transferring to Ishinomori Middle School, Tetsuko "Alice" Arisugawa overhears her classmates discussing a strange rumor. The previous occupant of her seat, a nondescript "Judas," is missing and presumed murdered—poisoned by one of his four wives. Amidst dealing with her mother's undesired meddling in her affairs and warding off her classmates' bullying, the troubled Alice starts to investigate the mystery surro...