The mother, who is completely estranged from her husband who lives away from her husband on a business trip, seems to have a lot of sexual desire lately. However, she doesn't seem to be interested in cheating, so she seems to be indulging in masturbation alone. The only one who can please the mother's body, who is still in her forties and wants to have sex, is her son! A sexual encounter full of immorality and lust! They fall into a forbidden physical relationship!