Two decades ago, Reiko married an older man, but growing weary of their sexless marriage, she began an affair with her younger coworker, Taichi. Drawn to his youthful, innocent charm, she has continued the relationship for three years, neglecting her family. One spring, seeking an escape from the mundane and craving new sexual experiences, Reiko invites Taichi on a driving trip. At their destination, surrounded by his young, energetic body, Reiko indulges herself, teasing and exploring Taichi’s form as she pursues fresh pleasure.