Bored and horny, a busty Latina sister retreats to her room, pulling down her tight jeans and panties to rub her wet pussy. Her little brother, hearing her soft moans, can't resist peeking through the keyhole. Caught in the act, she's embarrassed but intrigued by his growing bulge in his shorts. They argue, but the tension's palpable. Later, she finds him masturbating in the bathroom, his big cock hard and ready. She can't help but join him, fantasizing about his thick dick inside her. Just as they're about to cross the line, their mother's voice echoes down the hall, leaving them breathless and wanting.