As step-siblings Michelle and her brother share a cramped shower, their eyes meet, and the air shifts. Michelle, her skin glistening with water, can't help but notice her brother's growing bulge. He catches her gaze, and they freeze, their hearts pounding. Michelle, her breath hitching, reaches out tentatively, her hand hovering over her brother's thick cock. He nods, and she wraps her hand around it, stroking slowly. He leans into her touch, his other hand finding her soaking pussy. They explore each other's bodies, their moans echoing in the small space, until a creaking floorboard stops them in their tracks.