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.

Dar, is the son of a king, who is hunted by a priest after his birth and grows up in another family. When he becomes a grown man his new father is murdered by savages and he discovers that he has the ability to communicate with the animals, which leads him on his quest for revenge against his father’s killers.