Isolated siblings, Michel and Bruno, pass the time with a game of toys, but their innocent play turns into a heated exchange when Bruno's curiosity leads him to catch Michel pleasuring herself. Michel's frustration boils over, but they soon find themselves drawn to each other, exploring forbidden desires with their toys, rubbing and stroking until they're both on the brink. A sudden knock at the door forces them to halt their taboo delight, leaving them yearning for more.