[Machine Translation] A case of strangling a student to death in bed broke out at a private school for girls where 18 students live. A woman named Emme, who has taken a liking to Marco, the new detective assigned to the investigation, offers to help him solve the case, and the two begin a series of encounters. The case is successfully solved, involving the principal's testimony, the students' parents, and a suspicious character involving the deceased student's property, but the relationship between Marco and Emme takes an unexpected turn.