Aoi, the mother, entertains her son's friends Kawada and Kobashi, who are staying overnight for a farewell party for her son who is studying abroad. Late at night, Kobashi senses someone's presence and peeks into the bedroom to find Aoi and Kawada making out. He interrupts and threatens to tell his son, as Aoi and her friends get entangled in a fit of desire. Aoi refuses at first, but her forgotten desire as a woman is ignited and she becomes addicted to the young body.