New Moon is the name of the ship crossing the Caspian Sea. A young Lt. Petroff meets the Princess Tanya and they have a ship board romance. Upon arriving at the port of Krasnov, Petroff learns that Tanya is engaged to the old Governor Brusiloff. Petroff, disillusioned, crashes the ball to talk with Tanya. Found by Brusiloff, they invent a story about her lost bracelet. To reward him, and remove him, Brusiloff sends Petroff to the remote, and deadly, Fort Darvaz. Soon, the big battle against overwhelming odds will begin.

During the Florida land boom, the Marx Brothers run a hotel, auction off some land and thwart a jewel robbery.

Jim Hutton and Mary Archer are two liberals who are content to remain faithful to each other in spirit only. They are married with all the ritual of a church wedding, the bride believing that each should be allowed perfect freedom in personal contacts. Complications arise when these ideals are put into practice.

When Captain Howland decides that his daughter Tess is getting a bit to old to continue to go to sea with him, they move into a small cottage on the coast of Maine, but not for long. A local millionaire, Frederick Garfield, lays a false claim to the property and has them evicted. Later, when Tess saves a young man about her age from drowning, she is a bit dismayed to learn that he is Garfield's son. But when her father is jailed on a false-accusation charge of murder, the younger Garfield comes to their aid and proves he himself.

Sailor Spike dates girls whose names he finds in an address book. Each girl has the same tatoo, placed there by another sailor Bill. When Spike meets Bill they become friends. In Calais Spike meets Goldie. Bill warns him against her, but Spike ignores the warning until he finds Bill's tatoo on Goldie as well.

New York City tenement dwelling neighbors Blondie and Lottie are longtime best friends. When Lottie makes the cast of the Follies and moves up in the world, she arranges for Blondie, as well, to join the cast and gain the advantages. But the friendship goes awry when Lottie's sweetheart, wealthy Larry Belmont, falls for Blondie and she for him.

This pre-Code comedy-thriller centers on Robert Holden, a broke and discouraged veteran, who meets fellow American Elinor Green at a cafe in Paris. After their first encounter, Holden's attempt to return Green's thought-to-be stolen purse ends up rendering him a stowaway on board a ship bound for America. Also aboard is a collection of characters, including Green's banker fiancé, a famed scientist, and an opera singer. Romance begins to blossom between Holden and Green, just as a radiogram claims that an “infernal machine,” or bomb, is aboard the ship. Quickly each passenger accuses the others of planting the bomb until eventually Holden, jealous of Green's attention to her undeserving fiancé, falsely admits to being the culprit. In his role as assumed perpetrator, Holden tests the group further.

A terminally ill woman and a debonair murderer facing execution meet and fall in love on a trans-Pacific crossing, each without knowing the other's secret.

Following a killing and robbery in a big city back east, gang leader Kedge Darvas and some of his henchies take a train to a small western town in Idaho, with intentions of hiding out there until things cool down back in Chi or NYC, or wherever they lammed from.They are welcomed with open arms by the citizens under the impression they are there as capital investors with money to spend. Before long, Darvas figures the town is ripe for the taking and sends word for reinforcements, and each arriving train unloads a few suits and snappy-brim hats.Then they get rough, kill Sheriff Posey Meed and rile up the citizens, led by cowhand Brad Farley, who had Darvas spotted for a wrong number just by the way he made moves on Sue Vancey.

On the South Pacific island of Bora Bora, a young couple's love is threatened when the tribal chief declares the girl a sacred virgin.

A beautiful temptress re-kindles an old romance while trying to escape her past during a tension-packed train journey.

On the wharfs of San Francisco, saloon girl Toy, also known as Mary, lives over Mother Bright's bar. When Como Murphy, a fugitive from the law, hides in her room, she falls in love with him. He explains that after he spoke out about the rights of man to a crowd, a riot ensued, during which a policeman was killed. Como took the gun from the killer, but is thought to be guilty of the crime himself. Como, who reciprocates Mary's love, spends the night with her, but leaves to keep her out of danger. He joins the crew of a ship sailing to China after he is befriended by Turk, a big lumbering sailor who is also in love with Mary. Each man is unaware that they love the same woman.