Tractor Mac Arrives at the Farm

Sibley the horse lives on Stony Meadow Farm and is a hard worker the whole year round. Then Tractor Mac arrives at the farm, and suddenly, everything that Sibley used to do, Tractor Mac does, too. Sibley wonders if there is any room left for him—but when Farmer Bill and Tractor Mac get stuck in a soggy field, Sibley is...