Young Slim is a rat, alone in the world with only a yo-yo, when Buster, the one-eyed cat meets him and tricks him into stealing from a rich chicken. As the crime goes down, Slim meets a mouse named Jim who befriends him and takes him to his house to meet his family. Now, there the rat, Slim, does not meet with a completely warm reception. Grandpa does not trust rats. He knows all about rats and their bad reputation. Can Slim be trusted? The moment of truth will arrive. So, grab your yo-yo and knock out a few yo-yo tricks. Let the fun begin. (This is described on the jacket flap as Oliver Twist for tots.)