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.

Two expeditions are trying to reach the Lost City of Zoloz -- one headed by Professor Davidson, a scientist who wants to establish an archaeological site, and the other by a greedy treasure hunter who wants to keep the fabled treasures of the city for himself. An agent of a foreign power also wants to establish a secret airbase there, so he stirs up the natives against The Phantom, who has been able to get them to stay peaceful so far. When The Phantom is murdered, his son takes his place and sets out to restore peace to the jungle and stop the agents' and the treasure hunters' nefarious plans.

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.

A Paris sculptor (Richard Dix) fakes blindness in Los Angeles to recover his blackmailed sister's love letters.