Ace is in trouble. He is accused of attacking the excitable district attorney. For his misdeed, some want Ace to be killed. The problem is Ace is a police dog. His best friend and handler, Officer Daniel Harding (Dean Cain) is outraged. He is sure his dog partner would never attack without provocation. Because Ace can’t defend himself, it is up to Officer Harding to clear his good name. Harding takes Ace home. His family falls in love with Ace. Together they all work together to prove to the courts and to the other officers that Ace is still one of the greatest K-9 dogs.