Belle Duke, in order to get revenge on her former lover Philip Bang, organizes his jail break. But instead of Philip, it is the Italian Felice Brianza, AKAS Felix, who escapes. Now Felix is obliged to help Philip to escape. He succeeds and the two join to defraud Belle. The swindle plot become more complicated when Felix falls in love for Philip's daughter.
A spoof of the entire 1940s detective genre. San Francisco private detective, Lou Pekinpaugh is accused of murdering his partner at the instigation of his mistress—his partner's wife.