Step-daughter and step-sister indulge in taboo stepdaddy fantasy

The scene opens with a young woman, lying in bed, reading a book. She is dressed in a nightgown and appears to be alone in the room. Suddenly, her step-sister walks in, also wearing a nightgowned. The step-sis is clearly upset and starts to accuse the step-daughter of doing something to their step-daddy. The stepdaughter denies any wrongdoing and says that she has no idea what the step-siss is talking about. The step sis then proceeds to tell her story. She says that she was in the dorm room when the step-father came in and started to touch her. She was shocked but she didn't say anything because she didn' t want to ruin their relationship. But now she wants to tell her step-dad that she doesn't want him to touch her anymore. The stepfather doesn't seem to understand what she is saying and just keeps touching her. The step mother then walks in and sees what is happening. She is shocked and doesn't know what to do.