Rose Marie Lemaitre, an orphan living in the Canadian wilderness, falls in love with her guardian, Mike Malone, an officer of the Royal Canadian Mounted Police. The feeling is mutual. But, when she leaves to learn proper etiquette, Rose Marie meets a trapper named James Duval, who also falls for her. Further complications arise when Native American Chief Black Eagle -- a rival of Duval's -- is murdered.

Montana Marshals Gene and Scat are tracking some bank robbers. When the baddies cross into Canada, the Mounties are called upon to help.

Neale and Pedro fly cargo between Chungking and Calcutta. When their buddy Bill is murdered they investigate. Neale meets Bill's fiancée Virginia and becomes suspicious of a deeper plot while also falling for her charms.

Shortly after Pearl Harbor, a squadron of PT-boat crews in the Philippines must battle the Navy brass between skirmishes with the Japanese. The title says it all about the Navy's attitude towards the PT-boats and their crews.

A playboy produces an airtight alibi when he is questioned about the murder of his wealthy aunt.

A two-fisted Canadian Mountie leads lawmen in pursuit of the thieves who stole an Edmonton-bound freighter's cargo.