Ben Pole is on the run from his arch-enemy Monty Grabbe when he discovers a forest with rope swings, water slides, Herbert the wombat, and best of all, KING COO. But watch out! Cow-pat-a-pults and Slug Pulp to the ready! Monty and his gang have a dastardly plan, and Ben and Coo need to come up with their best invention yet.