It's the first day of summer vacation. Jack Taylor is already bored.Then Mr. Winchester Peabody, his very interesting new neighbor who could also be his 5th-grade teacher in the fall, invites him to go for a run. Even though Jack much prefers sitting, he decides to accept Mr. Peabody's invitation. At first, Jack isn't sure he likes to run. But since Mr. Peabody has a funny way of taking his mind off running, Jack soon conquers the Park...