The siblings, huddled together in their shared bedroom, can't resist the magnetic pull of their forbidden attraction. The older sister, Michelle, tentatively reaches out, her fingers tracing the outline of her brother's erection through his pajama pants. He responds with a sharp intake of breath, his cock twitching at her touch. They exchange a look, a silent agreement, and begin to undress each other. Michelle's hands shake as she wraps them around her brother's thick, straight cock, while he explores her tight, untouched pussy with his fingers. They move together, their bodies syncing in a dance that's both familiar and foreign, until they're both left panting and spent, their bodies slick with sweat and their minds racing with the reality of their incestuous act.