Everyone knows the world is divided into Biggies (who get whatever they want) and Smallies (who get whatever's left). Not content with his lot in life as a Smallie, Melvin the Mouse leaves Mouseville and sets out to conquer the world's Biggest Biggie in the world's greatest circus. Oblivious the limitations of his size and armed with an outlandish sense of confidence, Melvin pushes past gorillas, lions and rhinos in his quest for the Biggest Biggie, causing maximum mayhem and chaos, but emerging victoriously as the world's first "Biggie mouse." He may be naïve, unaware, and obtuse, but who needs brains when you've got (a very small amount of) brawn?.