A brother and sister, trapped together in a small space, find themselves drawn to each other in unholy ways. The religious guilt weighs heavy, but the carnal hunger is stronger. She tentatively touches his cock, feeling it stiffen under her fingers. He looks at her, his eyes filled with desire and shame, as she takes him into her mouth, tasting him, feeling him grow harder. They stifle their moans, afraid of discovery, but unable to stop the taboo dance of lust they've begun.