Three years into her marriage, Nao is troubled by her husband's cold behavior and apparent affair. Lonely and wanting to get back at him, she secretly takes a job that assigns her one client a month; whenever he calls, she must meet him, but she has to leave by 7 p.m. Her first client is Oki, who takes her to a hotel. When he asks why she chose this work, Nao says she wanted to be free and slowly begins to undress.