In the dim light of their shared room, the siblings can't help but steal glances at each other. She, a busty brunette, teases him with her short nightie, knowing full well he's watching. He, with a thick, throbbing cock, tries to hide his desire, but his tented boxers give him away. When she catches him jerking off, she decides to join in, fingering her wet pussy while he strokes his cock. Their games escalate, and soon, she's begging him to 'put it in' and 'come inside' her.