Sonoko, a bored married woman, falls for a fellow art student, the young and beautiful Mitsuko. The relationship develops and starts to affect and involve their partners.
Maruo, an independent film director, feels that he doesn't want to have sex because he loves her, and because of this, he breaks up with his girlfriend Aki. Unable to forget Aki, he tries to make a new movie based on his experience, but is stuck in writing the script. Why couldn't he hold Aki? Unable to find the answer himself, Maruo decides to meet her again to face that question. On the other hand, Aki is married to Tagashira, an office worker, but even though she wants to have children, she is worried about a sexless marital relationship. When Aki meets Maruo again after a long time, she asks him to give her some of his sperm.
