'Every morning, for just 3 minutes at the front door, I'm cheating with the neighbor's wife.' Misao, a housewife living a cold, empty daily routine. She happens to meet the college student living next door, and then— The moment her husband leaves for work, the doorbell rings. She opens the door, and there he is. Just 3 minutes at the entrance, the two of them desperately craving each other. They never go further than that — because they both have their own lives. At night, held by her husband, all Misao can think about is him. During the day, in an empty apartment, the name he whispers is Misao's. Knowing full well that going further would break everything, she can't help but open the door anyway. And when he finally reaches for more, Misao gives in. Consumed by guilt, she finds herself craving creampie sex.