Ernest P. Worrell and his History Professor partner Abner Melon embark on a thrilling adventure, uncovering a massive historical cannon and the crown jewels hidden deep in the jungle. As they navigate the treacherous terrain, Ernest must act quickly to save the precious jewels from falling into the wrong hands of a notorious mob.

Ernest Rides Again
Two friends stumble upon a massive cannon rumored to hold the Crown Jewels of England, unleashing a series of ridiculous and humorous mishaps.