Mao, a school girl, is asked by her older sister who can't have a child to become a surrogate pregnancy. Mao decides to have sex with her brother-in-law for her sister who wants a child with her blood. Mao, who was played with a young body by her brother-in-law, gradually remembers her pleasure. On her trip the night her sister is away, her brother-in-law unleashes her hidden sexual desires. Mao is tied to a chair in a room where obscene SM goods are scattered. Mao, who was forced to drink her aphrodisiac, is fucked in a threesome with her brother-in-law's friend. !
