Old Grumbly has begun to spew smoke and rumble noisily and many Urks fear it’s The End of the World. The tribe decides that Iggy and Chief Hammerhead must climb the deadly mountain to ‘sort things out’. Little do they know that something much more dangerous is racing through the forest towards their village. Now would be an excellent time for one of Iggy’s cunning plans. First he just needs to figure out how to avoid being barbecued alive …