A long time ago, in a land flowing with beards and kilts, there lived two clans who were locked in a longstanding feud! The tribes plotted against each other with various pranks, including water balloon ambushes, bad haircuts, and a host of other hijinks! Dwelling amongst these perpetual pranksters is "MacLarry" - a well-meaning young inventor who just wants to make kooky gadgets! Try as he may, he has never mastered the art of pranking, even after much training from the Chief prankster himself; his father, Chog Norrius. Discouraged, MacLarry sets on a journey to find the great inventor "Archie-medes", in hopes of finding a place he can belong. Meanwhile, the feud is escalating and Chog's clan is plotting their biggest prank yet; releasing the stinkiest cheese in the land on their rivals! When the cheese caper goes afoul, Chog and the people realize they aren't able to solve the situation on their own - they need MacLarry's special skills to save the day! Will Chog and the tribe find MacLarry in time to convince him that his unique and God-given gifts are just what is needed to help both clans from being overcome by the loathsome Limburger and resolve their differences for good?