Ayaka lives with her husband Takayuki, who works in the construction industry. Her husband is always on edge, and even at home she can't let her guard down. The only time she can find peace is when her husband takes a relaxing bath while he's at work... One day, Takayuki, concerned about his boss Kanda, who is covered in mud from working on a construction site, suggests that Ayaka use the bath at his nearby house. Just then, while Ayaka is taking a bath, Kanda happens to come across her masturbating to fill the loneliness of not being paid any attention by her husband...