Trapped in the house during a storm, siblings find solace in the forbidden. The flickering candles cast long shadows, highlighting their entwined bodies. He sucks her nipples, she strokes his length. Their kisses are hungry, desperate. She straddles him, impaling herself on his cock. He grips her hips, slamming her down as she grinds, their bodies slapping together. They come together, their cries drowned out by the thunder, leaving them breathless and guilty in the dim light.