Ventriloquist Jerry Morgan has failed with another love affair. The reason: when the relationship reaches the point when it is time to discuss marriage, his doll Clarence becomes mean and jealous. His fianc�e Audrey leaves him and Jerry smashes his two dolls, Clarence and Terrence. Morgan’s dollmaker Papinek is member of a spy ring who has stolen the secret plans to the top secret Lafayette airplane. Since Morgan is leaving for Zurich the same night, he decides to use Morgan’s dolls as a mailbox and hides the secret plan in the heads of the dolls. Another secret spy ring also wants to get their hands on Jerry’s luggage and they *also* follow him. Eventually, Jerry is chased by both these organizations as well as the police, who suspects him of murder.