The allure of the forbidden draws Andy to the bathroom, where he finds his step-sister, her naked body still damp from her shower, lost in the throes of self-pleasure. He watches, entranced, as she fingers herself, her moans of ecstasy filling the room. Unable to resist the temptation, he joins her, his towel dropping to the floor, revealing his rock-hard cock. She takes him in her mouth, her lips stretching to accommodate his size, her tongue swirling around his shaft. Andy's groans mix with hers, his grip on her hair tightening as he feels his orgasm approaching. With a final thrust, he cums, his sister eagerly swallowing his load.