There’s something growing in Snoops Bay. It started as a lump, then it became a bump, then a mound, then a hill. Now it’s a fully-fledged mutant mountain. Young detectives Riz, Olly, Drew and Anton know there’s more to the story than meets the eye and are determined to uncover the mystery. Little do they know, the biggest clue is lying a few miles away at Pigtopia, a brand-new pig theme park that’s hiding a mutant-sized secret . . .