Nehemiah Persoff

Fievel is a young Russian mouse separated from his parents on the way to America, a land they think is without cats. When he arrives alone in the New World, he keeps up hope, searching for his family, making new friends, and running and dodging the cats he thought he'd be rid off.

Some time after the Mousekewitz's have settled in America, they find that they are still having problems with the threat of cats. That makes them eager to try another home out in the west, where they are promised that mice and cats live in peace. Unfortunately, the one making this claim is an oily con artist named Cat R. Waul who is intent on his own sinister plan. Unaware of this, the Mousekewitz's begin their journey west, while their true cat friend, Tiger, follows intent on following his girlfriend gone in the same direction.

In the historic melting pot of 19th century New York City, Fievel and the Mousekewitz family are struggling to make their American dream come true. But when a mysterious treasure map leads Fievel and his friends to a secret world of Native American mice living beneath the city, he finds something even more precious than gold and jewels!

Fievel and other mice haunt the monster, with the result they want to track him down.