A nameless protagonist is sleeping when a monstrous hand appears from under his bed to nick one of his slippers. Awakened and annoyed, he pursues his precious possession through the giant hole... to unwittingly enter Full Pipe! Getting the slipper back is an easy task, but the little man is soon trapped in a complex system of pipes - all leading to different cells with unusual characters. Shown from a third-person perspective with drawn characters against pre-rendered 3D backgrounds, progress is achieved by collecting items, solving puzzles and playing mini-games.