Something strange is going on in Hoof Creek. A mysteriously deserted town has played host to a mental hospital. Private goes to investigate after Screw Loose mysteriously got sent there. What he finds is a mad house of horrors the likes of which he's never faced before. But he's not alone, The Doctor and Derpy have come after the Tardis mysteriously was forced to land there. Trapped in the insane asylum, the trio will be forced to use their wits if they ever hope to survive. But who is behind this mad house? And what do they want with Private and the Doctor?