Ayako and her son, Makoto, were connected by a forbidden relationship. One day, Ryoko and her son Takashi came to their house to play. Yuko provokes a hawk that has grown well, with her pride and she attacks the young meat rod. On the other hand, Makoto was attracted to Ryoko's beauty, and the four of them chanted each other's karada and developed into an unprecedented grand incest play.