Mio, an honor student who is a class representative at school, visits the home of a student who is not attending school. She intended to persuade him to come to school, but Mio ends up being surrounded by his house. She is toyed with one after another by her thug uncle and his male companions... At first Mio resists, but just as she gives up, thinking "I can't leave this house anymore," a masochistic pleasure begins to grow deep inside her body. She is creampied until she becomes pregnant, and eventually she loses her reason...