Stepsisters Alexa Grace and Elena Koshka have invited their cousin Scarlett Sage over for a sleeover. The girls haven't seen their cousin in a long time, and Scarlett is surprised when she spies the stepsisters with their hands pawing at each other's tits and their lips locked. It may not be what she was expecting, but Scarlett eventually lets herself become coaxed into joining in on the flirty fun as she strips down to her bra and panties in preparation for the evening. As Scarlett drives to sleep, Alexa and Elena exchange a knowing look that says they're just getting started. They lay together, making out as Elena reaches forward to fondle Alexa's clit through her thong. Sliding the fabric aside, Elena drives two fingers deep into Alexa's meaty snatch. In return, Alexa buries her face between Elena's thighs to feast on her trimmed twat. That's when Scarlett wakes up and realizes that it's hot as hell to watch her cousins go at it. Sliding her own panties aside, Scarlett masturbates as she watches Alexa work her mouth. Happy to include their cousin in their sex games, Elena and Alexa welcome Scarlett into their ring of passion. They put their fingers and mouths to work as they give Scarlett the full brunt of both of their attention. Then they produce a vibrating dildo that they try out in each dripping wet fuck hole. As the trio finishes themselves off with a group fingering session, they realize that they are tired from their fucking and drift to sleep in each other's arms.