Rika, a married woman of three years. Compared to when they first got married, her husband has become much busier and now hardly pays any attention to her at all. Feeling lonely about this, Rika tries to persuade her husband to at least go for a walk with her, but he doesn't pay her any mind. Moreover, she took out today's flyer and said if he had time, he should just go, handing him the swimming class brochure. Despite feeling shocked by the disconnect between them, Rika decides to attend the swimming classes. She has no idea that this decision will disrupt their marital relationship―
