Harry is a curious, mischievous young centipede who gets himself in all kinds of trouble when he disobeys his mother and makes the forbidden trip up into the dangerous world of "hoo-mins".

Harry the poisonous centipede is in big trouble. Despite his mother's warnings, he leaves his safe nest-tunnel and finds himself captured by a young Hoo-Min bug collector. Together with his friend George, he's shut into a hard-air prison (a glass jar to you). Even when they escape, many scary and creepy adventures await a huge flying swooper, a giant side-runner, even a fall into the no-end puddle (all right then, the ocean). And that's before they meet the Worst Things in the World! Will they make it home before something gets them?

Look out, Hoo-Mins! Here comes a third adventure to make you squirm. Harry and George, the incident-prone centipede buddies who have had fans laughing through two hilarious sagas of accidental derring-do, Harry the Poisonous Centipede and Harry the Poisonous Centipede's Big Adventure, are back in their third and final escapade—and this time our two favorite arthropods are in really over their heads!