"Who's feeding me? You've always treated me like a stranger... You've done everything he could..." Five years ago, the mother remarried the stepfather, who runs a company, and the sisters lived a life of luxury. However, their mother, who had been working nonstop, had broken down and was repeatedly hospitalized. The stepfather was deprived of a happy life with his wife, and his anger and sexual desire exploded at the sisters' rude attitude towards him. "Who's going to have sex with me? If you don't decide, we'll both be broken," he threatened, brainwashing them into sex slaves through fear and pleasure.