The Lionians, a tribe of lion worshippers, make a desperate attempt to find a cure for the mysterious disease plaguing their village. Their Chief decides to kidnap Jane and Lola, a half-breed nurse, in order to help repopulate his civilization. Tarzan must rescue them while fending off blowgun attacks from people called the Waddies who are disguised as bushes.

Andre Marbel is the upper-class doctor who is able to continue his practice above suspicion even though he is a leader in the French Resistance. His nurse supports his activities, but her Nazi-brainwashed husband provides the tension.

Major Geoffrey Barnett, U. S. Army Intelligence Service, is sent to Alaska, to apprehend a deserter, Tom Clark, who was presumed to be dead as a member of a small force wiped out on Attu in World War II. With the aid of Rose Flambeau, he finds evidence that the now-prosperous Clark killed his own comrades to prevent their reporting of a deposit of uranium, which he is now mining with the intention of selling to a foreign power.

Advance man Brass McGannon is nearly arrested for passing counterfeit money while promoting his circus' next stop. Returning to the circus, he learns that the Treasury Department suspects someone in the circus is responsible for the bogus dough appearing wherever the circus visits and suspicion falls on the show's newest employees. Meanwhile the alcoholic sideshow barker falls off the wagon when his beautiful daughter returns unexpectedly.

While stationed in France during World War II, an American fighter pilot marries a French girl but leaves her behind when he returns to the U.S. The French woman follows him to America only to discover he’s already married to a successful lawyer.

Construction workers in World War II in the Pacific are needed to build military sites, but the work is dangerous and they doubt the ability of the Navy to protect them. After a series of attacks by the Japanese, something new is tried, Construction Battalions (CBs=Seabees). The new CBs have to both build and be ready to fight.

Ambassador Joseph Davies is sent by FDR to Russia to learn about the Soviet system and returns to the US as an advocate of socialism.

The "boys" from Pine Ridge visit Europe and try to help a Yugoslavian ballerina find her American lover, become involved with French jewel thieves, and take on posh society in Monte Carlo.

Paris-based New York Herald Tribune reporter Jimmy Race is sent by his boss behind the Iron Curtain in Budapest to investigate a meeting involving the Hungarian ambassador.