Two different social classes collide when Cary Scott, a wealthy upper-class widow, falls in love with her much younger and down-to-earth gardener, prompting disapproval and criticism from her children and country club friends.

In the U. S. Army intelligence office, bumbling lieutenant Peter Stirling receives a coded message from his friend, Francis, a talking mule. The note urges Pete to hurry to the Coronado, California naval base, where Francis is about to be sold as surplus. Pete rushes to the train station, but before he can board, nurse Betsy Donevan mistakes him for her shell-shocked brother, Navy boatswain Slicker Donevan. She tries to forcibly remove his uniform so he will not get into trouble for impersonating an Army officer. Finally she realizes that Pete is not Slicker but merely his mirror image.

One evening, Hammer gives a ride to Christina, an attractive hitchhiker on a lonely country road, who has escaped from the nearby lunatic asylum. Thugs waylay them and force his car to crash. When Hammer returns to semi-consciousness, he hears Christina being tortured until she dies. Hammer, both for vengeance and in hopes that "something big" is behind it all, decides to pursue the case.

Scientists surgically transform the Creature into an air-breather, but being able to live on land is not enough to make him comfortable with humans. Enraged, he turns his wrath on anyone who comes near as he desperately tries to return to the deep-water world where he truly belongs.

A government agent's son wins respect and love when he challenges counterfeiters.

Big Arnie tries to make it in a hot-rod gang and get the girl... none who find him all that appealing.

Seeing a certain woman makes an airline pilot think he is a reincarnated World War I pilot.

Grocery clerk Eddie Quaid, in danger of losing his father to alcoholism and his girl Julie through lack of career prospects, goes into boxing.

Ben Matthews gives up the flashy life of a riverboat gambler, hoping to settle down in Galena with his girlfriend, luscious entertainer Zoe. But Galena's leading citizen is murdered on the boat; Ben, on arrival, finds a lynch mob after his neck, and flees. Three years of wandering later, Zoe's letters stop coming and Ben returns to find her and attempt the hopeless task of clearing himself.