Confined to the attic, the siblings find solace in each other's company, their solace turning into sinful exploration. The brother's BBC, hidden no more, commands the sister's attention. She traces its length, her own body aching with need. Their secret trysts continue, each time pushing boundaries, until one day, they hear footsteps. Panicked, they freeze, their secret safe for now, but their hunger for each other far from sated.