When Lt. John Harkness is assigned as the new skipper of a submarine chaser equipped with an experimental steam engine, he hopes that the U.S.S. Teakettle's veterans will afford him enough help to accomplish the ship's goals. Unfortunately, he finds the crew and its officers share his novice status or only have experience in diesel engines.

The story of Mexican revolutionary Emiliano Zapata, who led a rebellion against the corrupt, oppressive dictatorship of president Porfirio Díaz in the early 20th century.

The new commander of a Navy Underwater Demolition Team--nicknamed "Frogmen"--must earn the respect of the men in his unit, who are still grieving over the death of their former commander and resentful of the new one.

Questioned as a murder suspect, solid (but drunk) citizen Al Willis attacks his police questioners, is beaten, and swears vengeance against them. Next night, Lieut. Parks is murdered; Willis is the only suspect in the eyes of tough Chief Conroy, who pursues him doggedly despite lack of evidence. The obsessed Conroy is dismissed from the force, but continues to harass Willis, who flees to a sleazy town on the Mexican border. Of course, Conroy follows. But which is crazy, Conroy or Willis?

Lance Caldwell, a cavalry lieutenant, recounts his efforts to make peace with the Seminole Indian tribe, under an evil major.

A gambling boss is pressured by the law and press when a crusade is started against him after one of his collectors becomes a killer.

Army Captain Edward Hall returns to the U.S. after two years in a prison camp in the Korean War. In the camp, he was brainwashed and helped the Chinese convince the other prisoners that they were fighting an unjust war. When he comes back he is charged for collaboration with the enemy. Where does loyalty end in a prison camp, when the camp is a living hell?

Two smart marketing people resurrect some old films starring cowboy Smoky Callaway and put them on television. The films are a big hit and the star is in demand. Unfortunately no one can find him. When a lookalike sends in a photo, the marketing team hires him to impersonate Callaway. Things get sticky when the real Callaway eventually shows up.

During the Civil War, President Abraham Lincoln sends an emissary with a peace treaty to the Sioux Indians. He also sends a gift of $130,000 in gold. This attracts the attention of Brock Marsh, the secret leader of a Confederate spy ring, who wants to keep the treaty from being signed and to also get his hands on the gold. Ruth Lawrence and Mike Daugherty work together against the machinations of Marsh

A crooked salmon fisherman tries to steal his best friend's fiancée and put him out of business.