Kyle Mason is getting ready to watch a movie in the living room when he is joined by his stepsister, Sia Lust. Sia is getting settles in when she mentions that she knows Kyle's dad wants to watch the movie, too. Kyle says that his dad is in the shower, but Sia decides to pop into the room to say hi to him anyway. Before Kyle can react, Sia has bounced off to sneak into the bathroom. She slips inside and clearly has her way with her step dad, but she believes that Kyle is clueless. Little does Sia know that Kyle was listening at the door and heard everything.

When Sia returns to the living room and finds Kyle still on the couch, she tries to sit beside him and be good. She's still so horny though! She can't stop herself from rubbing those little titties and hard nipples even though Kyle is right there. When Sia sees Kyle looking, she climbs on top of him and insists that he lick her hard nipples. Kyle tries to talk to his stepsis about whether she has fucked her stepdad, but she denies it. Instead, she tries to derail the conversation by popping out Kyle's impressive boner and bending down to start sucking him off. Her blowjob is a total success at shutting Kyle up.

Now that she has seen what Kyle is packing, Sia can't stop herself from sitting up and sliding her tight pussy down on his fuck stick. Kyle loves his spinner sister's ride on his hardon, so he gets her on her belly and shoves himself deep inside. Sia curls up and lets Kyle give it to her before she gets on her knees for a proper doggy style pounding. When Sia sits down with her ass on the edge of the couch and lays back, Kyle gives her all the deep delight she can handle. He shoves himself all the way in to take his own pleasure in a creampie finish that leaves Sia fully satisfied.