A startled cow falling out of nowhere onto Limbo Goulash while he's riding Marley Gripe's bicycle marks the start of a chain of events strange even by Grubtown's standards.

Soon damaged property includes Purple Outing's Music Shack and Minty Glibb's attempt at the world's largest (strawberry) jelly-trifle.

With Mayor Flabby Gomez throwing a wobbly, all chief of police, Grabby Hanson, can do is have the cow-fearing townsfolk watch the skies.

Underground, meanwhile, there lies another big surprise...