The man the mother remarried has a son, and both of them are lewd. The mother is also lewd, so she starts having sex with the stepfather in front of her daughter. The daughter eventually can't hold back and ends up doing it with her stepbrother. The stepfather, who wants to have sex with his daughter so much, threatens her, saying that he will cry if he divorces her mother, and rapes her. However, she is a lewd woman like her mother, and she cums over and over again, so this mother and this daughter are perfect.