Scarlett Bloom has to share rooms with her stepbrother, Nathan Bronson, while their aunt is in town. Scarlett isn't inherently opposed to sharing, but she has a bedtime tradition of masturbating before she goes to sleep. They climb into bed together and Scarlett tries to ignore the awkwardness and sleep without cumming. When that doesn't work, she decides fuck it, it's her bed and she'll do what she wants. Nathan offers to leave, but Scarlett figures that maybe if it helps her it'll help both of them. She suggests that Nathan masturbate at the same time she does. They agree to each do themselves under the covers for privacy.
They go at it for a bit, but Scarlett decides that she wants to watch Nathan. They kick the covers off until they can both see each other. That just makes Scarlett even hornier, so she eventually pushes Nathan's hand out of the way and strokes him off herself. They are both getting into it when their aunt, Claudia Monet, walks in on them. She lectures them about it not happening again, but Scarlett is way too horny to let Nathan off the hook that easily. She resumes stroking him and then leans in for a taste of his hardon. In return for Scarlett's deep throat BJ, Nathan pulls her panties off and goes down on his belly between her legs for a pussy feast and finger bang. Then she gets on her hands and knees so Nathan can give it to her doggy style.
Nathan can't get enough of his stepsister's greedy twat as he lays down on the bed and lets her climb on top. She rides him while moaning about her progress towards the climax she's chasing. Turning around, she faces Nathan as she keeps her hips rolling in a mutually satisfying motion. Rolling onto her back, Scarlet spreads her thighs so Nathan can reenter her once again. He has just filled her fuck hole with a big load of jizz when Claudia returns and freaks out that the stepsiblings are fucking.