When a Spaniard decides to illegally enter La Habana by swimming, two rogues help him to find work in a sugar mill, where the emigrant falls in love with the daughter of the owner of the cane plantation.
Dan Evans, a small time farmer, is hired to escort Ben Wade, a dangerous outlaw, to Yuma. As Evans and Wade wait for the 3:10 train to Yuma, Wade's gang is racing to free him.
Young forester Sixt is wounded one night. Smuggling in the mountains is the reason. By day, the brothers Benno and Simon Schaidler are respectable citizens - by night, they are smugglers and poachers.
A mad doctor uses patients at his isolated psychiatric institute as subjects in his attempts to create longevity by surgically installing an artificial gland in their skulls.