Follow the clues to fun and excitement as the beloved little mouse takes on a big monster in this charming, full-length adventure. When a ferocious, mouse-nabbing creature puts fear into the hearts of New York City’s rodents, Fievel and his friends team up with a reporter to chase after the scoop of the century and — just maybe — get a close-up look at the bad guy himself!

Fievel and his friend Tony Toponi find a map that they believe points to a treasure buried somewhere beneath Old New York, and the plucky rodent is determined to find it. However, what he discovers under the city is a tribe of Native American mice who were driven underground by prejudiced European immigrants.