Mitsuru, a songwriter, is staying at an inn in a port town while visiting to write poetry. He is already in a physical relationship with Natsu, an employee at the inn, and he tells her about how he decided to become a writer because of a bitter past incident. Meanwhile, Mitsuru begins to frequently visit the restaurant run by Chiaki. Meanwhile, while her husband, Ippei, is away for an extended period due to certain circumstances, Chiaki is having an affair with her brother-in-law, Jiro...