When the cruel Thunder Giant Gorgo embarks on a quest to extract the all-powerful Horned Crown from the mystic recesses of the Hateful Gate it falls to a poor farm boy named Jack and a rag tag bunch of teenagers known as the Giant Killers to stop him. For the Jack and the Giant Killers, stopping Gorgo will mean an adventure in the wondrous land of Ooom that none of them had ever imagined. But the biggest feat of all might be if they can find a way to get along with one another long enough to prevent Gorgo from achieving all power.