Rika, a married woman for three years, finds her husband increasingly busy and hardly pays any attention to her now. Feeling lonely about this, she tries to persuade him to at least take a walk with her, but he doesn't respond. Moreover, this morning he handed her a flyer for a swimming class, suggesting she could go if she was bored. Rika, feeling the disconnect in their marriage, decides to attend the swimming class. Unaware that this decision could disrupt their relationship.
