Crazy things are happening in the town of Starkley: Hamish’s mum and brother are suddenly stuck to the ceiling, strange burping noises are heard, and weird seeds rain from the sky. Equipped with humor, quick wit, and of course sandwiches, Hamish and his gang—the "PDF" (Pause Defence Force)—must unravel the mystery behind the ‘gravity burp’ before the entire town is upside down