Mana is a female student who grew up in a wealthy family and has nothing to lack for. One day, on her way home from school, she is kidnapped by a group of assailants with no fixed address as she is about to go on a date with her boyfriend. She is taken to a dreary, abandoned old house, where she is unreasonably victimized by the men's vile desires. No matter how much she cries and refuses, they do not accept her, and she is pinned down every day. ...And several months later, Mana's personality is destroyed and she is pregnant with a child, but it is unclear who the child is.