In this lighthearted family fare based on a true story, Dean Cain plays decorated police officer Daniel Harding, whose canine partner -- a heroic German shepherd named Ace -- faces euthanasia after being falsely accused in a mauling incident. When a callous, overeager district attorney wants Ace put down, Daniel springs into action along with his amateur detective daughter, Julia (Britt McKillip), to prove the dog's innocence.