It's family movie night and we all pile on the the couch. step-Sister sits on bros lap since there's not a lot of room on the couch. Little does she know that her step-brother is starting to get hard. He teases her with his bulging cock before finally pulling it out. step-Sister is hesitant at first, but eventually give him a hand. Meanwhile, step-mom and step-dad are clueless. Though they are annoyed with how rambunctious the step-son and step-daughter are being. It's not until the parents step out that the step-son and step-daughter really go at it. Sis is upset when she gets a creampie from her step-brother and storms out. step-Dad goes to calm the situation only to end up fucking her and giving her another creampie. Meanwhile step-mom and step-son are talking about what happened on the couch when step-mom is surprised that her step-son is still horny. She decides to take it upon herself to educate him and lets him fuck her but instructs him to pull out and cum on her instead of in her. What can we say! We're a tight family!