The siblings' secret tryst turns into a storm of passion. As they writhe together, their moans echo, drowning out the world outside. Her legs wrap around him, pulling him closer, their bodies slapping together in a rhythm as old as the rain. He grips her thighs, his fingers leaving marks, as she bites her lip, trying to stifle her cries. The room fills with the scent of sex and the sound of wet, ravenous bodies seeking release in each other's arms.