The plot revolves around a troubled teenager who killed her mother to protect her stepfather, a man who has since moved on with his new girlfriend. Little does she know that she's in for a surprise. Featuring mockumentary clips of schoolgirls discussing sex and street interviews of ordinary people about sex, Stepdad films boss's stepdaughter and tricks her on a TV show with stepfather xxx. The stepfather Xxx has been married to his wife, Soo-Hyun, for 10 years, but his wife has been cheating on him. Haru, a former student of Soo-Hyun's, shows up shattered after her boyfriend betrays her..