Animated musical adaptation of Mark Twain's novel "The Adventures of Tom Sawyer." In this adaptation, the characters of Tom Sawyer, Huck Finn and friends are cast as cats, foxes and dogs. Tom and Huck witness the evil Injurin' Joe committing an awful crime that is blamed on Mutt Potter. With the help of Becky, Tom and Huck aim to set things right. Along the way, they sail to an island in a river, attend their own funeral and get chased down into the darkness of dead Man's Cave where they must confront their fears and take charge of their lives.