When the circus comes to town, Snoopy naturally pays a visit. There he falls for a beautiful poodle performing there. He soon runs away to join it. While he quickly becomes a star performer, Charlie Brown is distraught by Snoopy's decision while Snoopy himself has to face some realities of show business himself.

Charlie Brown and a few of his friends attend a camp, and there they meet Joe Aggit, a lying bully who offers to teach kids the game of Marbles without telling them it's for keep. Then he takes their marbles for good. When Rerun is tricked and gets his marbles taken, Charlie Brown must use his own marbles to help get the other kids their marbles back. The only problem is, Charlie Brown doesn't know how to play. 　　--imdb

After gorging on Charlie Brown's food, Snoopy suffers a vivid nightmare that he has been hitched up as a sled-dog in the far north. The tough conditions and tougher teammates forces him to make a startling change in character in order to survive.