Ayano divorced her husband a few years ago and lives humblely with her son Kenta. One day, Kenta is suddenly shaken by a lover who has been dating for many years. Ayano proposes to take a bath without the need for mother and child water for the first time in a long time. Kenta seemed to have washed away the lover who was shaken with the dirt on her body, but her mother's naked body, which she saw for the first time in a long time, did not get out of her head and from that day on, she began to have a forbidden feeling for Ayano. ….