A ship sent to investigate a wave of mysterious sinkings encounters the advanced submarine, the Nautilus, commanded by Captain Nemo.

Will Kane, the sheriff of a small town in New Mexico, learns a notorious outlaw he put in jail has been freed, and will be arriving on the noon train. Knowing the outlaw and his gang are coming to kill him, Kane is determined to stand his ground, so he attempts to gather a posse from among the local townspeople.

The rebellious Thracian Spartacus, born and raised a slave, is sold to Gladiator trainer Batiatus. After weeks of being trained to kill for the arena, Spartacus turns on his owners and leads the other slaves in rebellion. As the rebels move from town to town, their numbers swell as escaped slaves join their ranks. Under the leadership of Spartacus, they make their way to southern Italy, where they will cross the sea and return to their homes.

A Los Angeles fire captain (Roy Roberts) sends an arson-squad rookie (George Cooper) undercover.

Grant MacLaine, a former railroad troubleshooter, lost his job after letting his outlaw, the Utica Kid, escape. After spending five years wandering the west and earning his living playing the accordion, he is given a second chance by his former boss.

Tony Rome, a tough Miami PI living on a houseboat, is hired by a local millionaire to find jewelry stolen from his daughter, and in the process has several encounters with local hoods as well as the Miami Beach PD.

When newlyweds visit Las Vegas, the wife's shady past comes to the surface.

An aspiring playwright gets a job in a New York City restaurant favored by celebrities in hopes of getting a break. Unfortunately, most of them believe that the waiter lacks the talent to make it big. Only an aspiring songwriter, and a former waitress who has become a famous Hollywood radio star, really believe in him. When the ex-waitress drops by the restaurant to say hello, she and the others decide to play a trick on an arrogant producer by making him believe the waiter has written a sure-fire hit. They succeed and the producer puts on the show. The singer gets to be the star. When the show becomes a smash, everyone is surprised. Songs include: "Hitchhike To Happiness," "For You And Me," "Sentimental," and "My Pushover Heart."

Rowdy Yates is accused of murder, and has to alert the Army to a bandit assault.

Heading east to Fort Worth to hire a schoolteacher for his frontier town home, Link Jones is stranded with singer Billie Ellis and gambler Sam Beasley when their train is held up. For shelter, Jones leads them to his nearby former home, where he was brought up an outlaw. Finding the gang still living in the shack, Jones pretends to be ready to return to a life crime.