In the sultry summer heat, Summer finds herself alone with her stepbrother, their shared room stifling. She watches, fascinated, as he strokes his huge cock under the thin sheet, his breathing heavy. Emboldened by the game she played earlier, she reaches out, tentatively touching his shaft. He groans, his hips bucking slightly. She grows bolder, wrapping her hand around him, feeling him pulse in her grip. He flips her onto her back, his body pressing against hers. She can feel his hardness against her thigh, her own desire building. They kiss, their bodies entwined, their hands exploring each other's flesh, their moans filling the room as they give in to their forbidden lust.