Angus and Sadie, sibling pups that are of mostly border collie heritage, are adopted by a young couple and taken to live on a Maine farm, where they begin to learn sheep herding and come to appreciate their differences.
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.
