A brother who loves his sister so much that he wants to have sex with her. When the boyfriend of his sister, who is the object of his jealousy, visits their home, he tricks them both by giving the boyfriend a sleeping pill and the sister an aphrodisiac. As the boyfriend sleeps, the brother approaches his sister, who reluctantly but involuntarily feels aroused due to the aphrodisiac's effects. Moreover, this does not end with just one time; the sister becomes hooked on the taboo acts with her brother as he continues to demand her body without the boyfriend finding out, eventually even asking for him to ejaculate inside her…
