Trapped together in the house, a brother and sister find solace in mutual masturbation. She strokes her clit, he jerks his cock, their moans echoing through the empty halls. One day, caught in the act, they argue, but later, curiosity piqued, they explore each other's bodies. Naked and exposed, she takes in his thickness, he revels in her wetness. Just as they're about to cross the final boundary, a sudden interruption forces them to halt their forbidden dance.