Emma's step-sister, Alex, starts the massage, his hands exploring her curves, lingering on her tattoo. As he reaches her lower back, his cock tents the towel. Emma turns around, her eyes hungry, and takes Alex's cock in her hand. She strokes him, her other hand working her pussy. Alex turns her around, fucking her from behind, his hands gripping her hips. The room fills with the sound of their bodies slapping together. Emma turns around, straddling Alex, her tits bouncing as she rides him. Alex's cock throbs, and he pulls out, cumming all over Emma's back.