Taku has a daughter, Non, and he remarries a woman who already has a son. When the two families started living together, the siblings fell in love. This forbidden relationship did not last long as Taku, who could not cope with the loss of his late wife, lost his marbles and began raping his daughter Non daily, because she looks a lot like his late mother. What's more, things expand considerably when Taku begins giving his daughter to his business partners in a series of gangbangs, further complicating the sister-in-law love story.