With her husband away on a long-term assignment, Yumi is bored and lonely. She goes drinking with Kuroi, a younger coworker juggling several part-time jobs, and his powerful body reawakens her desires. They begin a time-limited affair, repeatedly sneaking off during work breaks to devour each other. Every rushed encounter is so intense that he barely has time to lose his erection between orgasms. Before long, Yumi cannot live without his young cock and seeks him out anytime, anywhere.