Prim professor Immanuel Rath finds some of his students ogling racy photos of cabaret performer Lola Lola and visits a local club, The Blue Angel, in an attempt to catch them there. Seeing Lola perform, the teacher is filled with lust, eventually resigning his position at the school to marry the young woman. However, his marriage to a coquette -- whose job is to entice men -- proves to be more difficult than Rath imagined.

A blue-collar worker on New York's depressed waterfront finds his life changed after he saves a woman attempting suicide.

A blue-collar worker on New York's depressed waterfront finds his life changed after he saves a woman attempting suicide.

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

On return from Europe Dr. Decker foils glamour girl Georgi from jumping overboard. At Decker's suggestion to keep busy, she assists at his clinic in the slums.

Composer Johann Strauss risks his marriage over his infatuation with a beautiful singer.

Beautiful half-breed Pearl Chavez becomes the ward of her dead father's first love and finds herself torn between her sons, one good and the other bad.

During the 18th century, German noblewoman Sophia Frederica, who would later become Catherine the Great, travels to Moscow to marry the dimwitted Grand Duke Peter, the heir to the Russian throne. Their arranged marriage proves to be loveless, and Catherine takes many lovers, including the handsome Count Alexei, and bears a son. When the unstable Peter eventually ascends to the throne, Catherine plots to oust him from power.

Nick Cochran, an American in exile in Macao, has a chance to restore his name by helping capture an international crime lord. Undercover, can he mislead the bad guys and still woo the attractive singer/petty crook, Julie Benson?

A criminal known as Thunderbolt is imprisoned and facing execution. Into the next cell is placed Bob Moran, an innocent man who has been framed and who is in love with Thunderbolt's girl, without knowing of their relationship. Thunderbolt hopes to stave off the execution long enough to kill young Moran for romancing his girl.