Momoko, a mother who has been separated from her husband for 15 years, has devoted her life to her beloved son without remarrying. One night, she heard gasps coming from her son's room. And Momoko, who spied on her beloved son having sex, is dominated by her jealousy rather than her joy that her son has grown into an adult man. After this day, Momoko's perception of her son completely changes. Struggled with the wall of her parent and child