Protagonist Kazuo that came to a certain uninhabited island as exploration tour. Though the plan was to enjoy the tour with three schoolgirls and huge breasts female homeroom teacher... However, girl Leila of mystery that reads the heart of the person met in the uninhabited island, the female teacher who tempted them to the tour is vomiting the lie is seen through. And, the peaceful exploration tour in the uninhabited island, turns into the feast of humiliation where lust overflows. Continuousness deceiving each other and betrayal, can Kazuo escape safely....? Or...