Nao, a woman who has been married for three years, has recently been troubled by her husband's coldness. Her husband seems to be cheating, as expected, and Nao feels lonely. Nao chooses a job that no one can know about. Each month there is only one client, and if you want to see her, you have to wait until after 7:00 PM under various restrictions. She is introduced to a man named Oki and eventually goes to a hotel with him. Nao tells Oki that she wants to be free, and she slowly begins to undress.