One day, Mizuna, a beautiful and kind female teacher, visits the home of Nozomi, a student who refuses to come to school. Nozomi makes an aphrodisiac out of legal drugs in the tea she serves Mizuna, and rapes her while she is in a daze... Nozomi's father and brother also turn their obsessive desires towards Mizuna, filming her voluptuous body and lewd behavior on video camera. Eventually, Mizuna, despite feeling deep despair, begins to develop a masochistic nature, and becomes immersed in debauchery...