The unflappable Charlie Chan (Sidney Toler) takes on a group of fast-track media types in this forties send-up of bad radio drama, snarling sponsors and tense thespians that also features Mantan Moreland and partner Ben Carter doing their classic nightclub routine - A Chan movie first!
A fatal mistake made by an impatient detective in Chan's employ leads the master sleuth to a radio studio that is somehow connected to radar operation in the same building. A bloody heel print, lethal cigarettes and an icy wind tunnel all provide Charlie with good clues to a dastardly scheme to steal top-secret radar plans - but these suspects are experts at deceit. After all, it's their business!