After years of marriage, Rio's husband begins breaking the rules they set for their sex life, and petty arguments become constant. Hoping to escape the dull routine of being a housewife, she takes a part-time job at Ozawa Moving. Her middle-aged boss listens sincerely to her marital problems and becomes almost a father figure. A week into the job, Rio discovers her husband's affair; when Ozawa comes to comfort her, she suddenly kisses him, beginning their sweaty workplace affair.