Confined to their tiny room as punishment, the sisters find their thoughts wandering to the same forbidden place. One starts to touch herself, quietly at first, but her moans give her away. Her sister, intrigued, watches from the corner of her eye. When she sees her sister's hand disappear beneath her skirt, she can't help but join in. Soon, they're both lost in pleasure, their bodies writhing, thighs glistening. The tension between them builds, until finally, they can't resist any longer, and they come together in a tangle of limbs and whispered secrets.