Glibb finds an abandoned puppy on the side of the road searching for food. He carried the puppy home to care for him. His parents allow Glibb to keep the dog for companionship if he would care for and train the puppy. Glibb visits his new friend Lee, and his puppy follows along. They meet a girl the same age as the boys. She had moved in next door to Lee. They become friendly and Glibb invites her to go fishing with him and his dad, and friends. Glibb enters a soap box derby and builds his racer. His friends also enter the race. Glibb has wonderful adventures with his friends and realizes that his puppy requires a lot more training.