Michelle and her brother, both horny and curious, find themselves alone in the house. They sneak into the basement, Michelle's heart pounding as her brother locks the door. She pulls off her top, revealing her lacy bra, and he groans, his cock tenting his pants. He unhooks her bra, freeing her ample tits, and she shivers as he takes a nipple in his mouth. She unzips his pants, pulling out his hard cock, and strokes it as she watches him undress her. He pushes her onto the couch, spreading her legs, and dives in, licking and sucking her clit until she cums. Then, he slides his cock into her tight pussy, fucking her missionary before flipping her over and taking her from behind. They cum together, their taboo encounter leaving them both satisfied and guilty.