The game of truth or dare takes a dark turn when a curious sister dares her brother to spy on her in the shower. He succumbs to temptation, watching her lather up, her soapy hands sliding over her perky tits and shaved pussy. When she catches him, she's delighted, pulling him in and making him join her. They share a steamy kiss, and she guides his hand between her legs, showing him how she likes to be touched. He finger-fucks her until she's quivering, then she drops to her knees, sucking his cock until he's rock hard. She teases him, rubbing her ass against his cock, before finally giving in and letting him slide into her tight, virgin hole.