George Nader plays a reporter whose career is ruined by liquor. A comeback opportunity presents itself when Nader is a bystander at the arrest of a well-known criminal.
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.
A wealthy business man discovers he has a brain tumor and seeks medical help. The business man finds a scientist experimenting with transplanting monkey heads on different monkey bodies.
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.