They only get hornier with age: four women around sixty surrender to endless carnal desire. Ai gives a young male client his first yoga lesson, casually touching his body until it turns into a very private session. During a family hot-spring trip, an adult son role-play has him sneak into his sleeping parents’ room and uncover Yumi; she notices and tries to stop him, but the encounter continues. When a lawyer’s representative confronts Mitsuko with evidence of her affair with the neighborhood association president, she tries to keep him quiet. Worried that her adult son role-play may be behind a string of local groping incidents, Michiko enters his room, where he takes out all the desire built up during his year of exam preparation on her.