In time-honored fashion, a couple of supporting players -- George Dolenz and Bill Kennedy -- found themselves elevated to starring roles in this minor Universal serial. They played Royal Canadian Mounted Police officers investigating the murder of a miner. The story, of course, was less important than speed and action, which directors Ray Taylor and Lewis D. Collins delivered in typical slap-dash Universal style. Starlet Daun Kennedy did not make much of an impression as the imperiled leading lady, and former star Robert Armstrong (of King Kong fame) was wasted in a subordinate role. Rondo Hatton, a non-actor whose grotesque appearance (caused by acromegaly, the so-called "Elephant Man" disease) was tastelessly exploited by Universal in the '40s, appeared as one of the outlaws.

Western star Charles Starrett makes one of his periodic forays into the Great White North in Columbia's Royal Mounted Patrol. When villainous lumberman Frenchy Duvalle refuses to limit his wood-chopping activities, he inadvertently touches off a forest fire. Trapped in the middle of the conflagration, Frenchy's only hope for rescue is mountie Tom Jeffries, presently scouring the countryside in his scout plane. Jeffries' reasons for bringing Frenchy out safely are twofold: he must deliver the renegade lumberjack to the authorities, and he happens to be in love with Frenchy's sister Betty.

Billy the Kid has been wrongfully arrested for robbing a train. In order to prove his innocence, the Kid breaks out of jail and hits the trail to search for the real robbers. Along the way, he discovers that an outlaw band has been impersonating upstanding ranchers.

When a band of American Indians breaks a treaty with the federal government, U.S. Marshals Ken Maynard and Hoot Gibson hit the trail with captured outlaw Duke Dillon (Jack La Rue) to find out what sparked the uprising. They discover clues that point to corrupt Indian agent John Hampton (Kenneth Harlan), but meanwhile, the bandit Dillon pulls a fast one on the marshals, and soon everybody's getting ready for a showdown.

The Canadians have discovered a valuable substance called Compound X, which can cure infantile paralysis. When a country at war with Canada learns that Compound X also contains magnetic properties that could aid them in their warfare against the British, they send agents to infiltrate Canada and steal a large quantity of the substance. It's up to Sgt. King (Allan Lane) and his Mounties to track down the agents and put an end to their scheme.

Counterfeit bills are being printed in Canada and shipped across the border hidden in blocks of ice. When the counterfeiters force engraver Bronson to make a new plate, he inscribes a tiny help message on it. Renfrew catches a henchman who has one of the new bills. A magnifying glass lets him read the message and he heads out alone to round up the counterfeiters.

Bill Ramsbottom sells his English pub and drags his family off to Canada where he has inherited a ranch from his grandfather Wild Bill Ramsbottom. He ends up tangling with outlaw Black Jake, an Indian chief Blue Eagle, and the local law.

City dweller Egghead dreams of being a cowboy, but his bouncing around gets him kicked out of his boarding house. He sees an ad for a ranch looking for a cowboy and applies. His tryout includes tests of marksmanship and use of a branding iron, but most of it consist of chasing down and roping a troublesome little calf. He passes the test, but the job isn't exactly what he dreamed of.

On a cattle drive Hoppy, camp cook Windy, companion Lucky, and young Artie Peters encounter an eccentric professor. The professor professes to be searching for the evolutionary missing link, but in reality he is a cattle rustler who uses his dynamite to scatter the cattle in order capture some of them. Hoppy and Bar 20 guys ultimately capture the professor.

When Daniela finds out that her best friend Yehudit has cancer, Daniela decides that they should be brave and do one big and special thing.