Charley Pearl wealthy heir and gadabout is slated to marry Adele the daughter of a Hollywood tycoon. But during a wild bachelor party in Las Vegas Charley strikes up a flirtation with nightclub crooner Vicki Anderson that soon leads to her bedroom. When the couple are discovered by Vicki's beau infamous gangster Bugsy Siegel he makes a surprising pronouncement -- they'd better marry or Charley is a dead man.