The Marx Brothers take on high society and the opera world to bring two lovers together. A sly business manager and two wacky friends of two opera singers help them achieve success while humiliating their stuffy and snobbish enemies.

American chemist Ned Faraday marries a German entertainer and starts a family. However, he becomes poisoned with Radium and needs an expensive treatment in Germany to have any chance at being cured. Wife Helen returns to night club work to attempt to raise the money and becomes popular as the Blonde Venus. In an effort to get enough money sooner, she prostitutes herself to millionaire Nick Townsend.

It's the 1930s, the Depression era, and the Board of Directors of Thomas Dickson's bank want Dickson to merge with New York Trust and resign. He refuses. One night, Dickson's bank is robbed of $100,000. The suspect is Matt Brown, an ex-convict whom Dickson hired and appointed Chief Teller. Brown, who's very loyal to Dickson, refuses to say where he was that night. He actually has two witnesses for his alibi, Mrs. Dickson and fellow worker Cyril Cluett, but Brown is protecting Dickson from finding out that Mrs. Dickson was with Cluett having a romantic evening. Cluett, who has a $50,000 gambling debt, is actually responsible for the robbery, but lets Brown take the rap. Will Brown's loyalty to Mr. Dickson pay off, or send him back to prison? Written by Kelly

Tom Powers and Matt Doyle are best friends and fellow gangsters, their lives frowned upon by Tom's straight laced brother, Mike, and Matt's straight laced sister, Molly. From their teen-aged years into young adulthood, Tom and Matt have an increasingly lucrative life, bootlegging during the Prohibition era. But Tom in particular becomes more and more brazen in what he is willing to do, and becomes more obstinate and violent against those who either disagree with him or cross him. When one of their colleagues dies in a freak accident, a rival bootlegging faction senses weakness among Tom and Matt's gang, which is led by Paddy Ryan. A gang war ensues, resulting in Paddy suggesting that Tom and Matt lay low. But because of Tom's basic nature, he decides instead to take matters into his own hands. Written by Huggo