Ace the Wonder Dog

A U. S. Marines dog is returned to his young owner in the small town of Monrovia at the end of WWII, but a grouchy neighbor believes the animal's military training makes him a threat to the community and files charges to have the dog destroyed.

Fearing that his recently-acquired step-mother, Ann Dennis, is competing with him for his father's affections, and saddened by the death of his dog, young Danny Mitchell seeks consolation in the companionship of a ferocious, Nazi-trained police dog, Rusty, brought to the U.S. by a returning WWII-veteran. The step-mother, with tender understanding, eventually wins Danny over while Danny pacifies his new dog.

In this anti-Japanese WW II propaganda film, Japanese invaders attempt to raid Alaska and are totally obliterated. The trouble begins when a stranger visits a small town and tells them that the U.S. is going to be taken over by a powerful country. The story turns out to be true when the Japanese bomb Pearl Harbor. The town then rises up and slaughters a Japanese raiding party.

A rookie cop tries to prove his friend is innocent of a robbery, despite the police commissioner's objection to his use of a trained German Shepherd dog named Ace.