Tsubaki lives with her husband Takayuki, who works in sales. Her husband is nervous and self-centered, so she can't let her hair down even at home. The only time she can find peace is when her husband takes a relaxing bath while he's at work... One day, Takayuki invites his subordinate Kanda, who accidentally soiled his suit while out on a business trip, to use the bath at his nearby house. Just then, while Tsubaki is taking a bath, Kanda happens to come across her masturbating to fill the loneliness of not being paid any attention by her husband...