Pluck has a little red tow truck. He drives it all over town looking for a place to live. Then Dolly the pigeon tells him that the tower of the Pill Building is empty. In the Pill Building, Pluck meets Mr. Penn and Zaza the cockroach.

Pluck makes lots more friends and solves all kinds of problems. But the biggest problem is Dove Grove. It used to be a garden with tall trees, but it has been neglected and gone wild. Grown-ups never go there, but the kids from the Pill Building love playing there. But now the Park Superintendent has decided to chop down the trees to make a paved square. Pluck and his friends try to save Dove Grove. But first he has to rescue Longmount from the canal.