What could possibly go wrong with you and your step-sister having the house to yourselves? Finally! For the first time since you and your step-sister started fucking you have the house to yourselves. She thinks the best way to celebrate is a nice fuck on the couch. Oh no, no condoms? No stress. She can just get off, and its not like she’s ovulating. There’d be no step-son for her to risk getting knocked up by her step-brother, right?