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