Akari, a masochistic mother who has been trained by the man she calls "Master," is ordered to submit her daughter Sumire as a sex slave. Fearing she'll be abandoned if she refuses, Akari decides to give in. While Sumire is out, she takes advantage of the situation and seduces her boyfriend, driving him wild with bondage sex. Later, Sumire witnesses the strange behavior of her mother and boyfriend and is also bound and violated. However, she awakens to her own abnormal sexual desires, and both mother and daughter fall into the abyss of bondage training together. #NTR