Masao, a son who has never even spoken to a girl, spends his days masturbating to relieve the loneliness of not having a girlfriend. Worried about her son, his mother (Wang) finds out that he is a virgin and cannot get a girlfriend, so she uses her own body to check Masao's technique so that he can somehow get a girlfriend. However, Masao's sex is too rough due to watching too much adult videos, so she gives him a sex education from scratch...