Bored and annoyed with each other, a brother and sister find solace in mutual masturbation. The young woman, Michelle, fingers her wet pussy while stroking her big ass, trying to be discreet. But her stepbrother catches her in the act, and their argument heats up the already charged atmosphere. Later, they make amends and decide to masturbate openly in front of each other. Naked, Michelle takes in her stepbrother's thick, straight, huge cock as he jerks off lustfully. Soon, she fantasizes about feeling that massive dick plunging into her tight cunt. Just as they're about to act on their mutual yearning, someone enters, forcing them to abruptly end their erotic encounter.