In a shared living space, a brother and sister, both sexually frustrated, find themselves alone and horny. The sister, Michelle, retreats to the bathroom to masturbate, her moans echoing through the house. Her brother, hearing her, can't resist the temptation to join in, stripping naked and stroking his cock to the sound of her pleasure. Caught in the act, they argue, but the tension between them only grows. Later, they reunite, naked and eager, Michelle's eyes locked on her brother's thick cock. Just as they're about to cross the line, a sudden noise forces them apart, leaving them both yearning for more.