It's a wonderful day for Spot. He is spending the day with Grandma and Grandpa and they are taking him to the carnival! And there's an extra special surprise in store. Spot and his friends get to ride in the carnival parade on an actual fire engine! But when the float with the carnival's band gets a flat tire, who will save the day? Find out in this marvelous adventure! Includes the complete half-hour Grandparents special plus two bonus episodes!