The film's content is about a mother who often sees her beloved son showing unusual signs at home, such as going to the toilet for a long time and secretly masturbating with his mother's underwear. Making Reiko Sawamura feel worried, so she confided in her husband, but the husband didn't care much and even told her to talk to her son herself to know what difficulties he was having. That night, Reiko accidentally saw her son secretly reading hentai comics, making her very surprised about this, so at that moment she thought, I will definitely teach a lesson. Sex education for my son.