As the summer sun beats down, siblings find themselves alone and horny. The sister, craving release, begins to masturbate, her hand moving furiously over her clit. Her brother, overhearing her moans, enters the room and catches her in the act. Instead of shame, they find mutual desire. He strokes his cock to the rhythm of her fingers, and soon, she's on her knees, giving him a handjob. Their bodies glisten with sweat as she pumps him faster, feeling his cock throb. With a final stroke, he erupts, his cum shooting onto her tits.