Jack has found a home and a purpose on a farm, keeping a flock of sheep safe from coyotes and training pups to do the same, but now he and his boy, Luke, must face a rabid wolf that threatens them all.

After a fire destroys the farm where he was born, a young border collie acquires a series of owners and learns about life as he seeks a home and longs to fulfill his life's purpose of shepherding sheep. Sheep everywhere! The truck stopped, and they closed in all around us like a big gray woolly blanket, bawling and baaing, stinking like, well, like sheep. They were bigger than I was, every last one, and so many I couldn't count them, more sheep than...