Michelle and her brother, consumed by religious guilt, turn to a game of Taboo for forbidden thrills. In the dimly lit room, they take turns describing erotic words without using certain 'taboo' words. As the game heats up, so does their desire. Clothes start to come off, and the game becomes a means to an end. They struggle to maintain their innocence, but their bodies have a mind of their own, leading them down a path of taboo lust and sinful pleasure.