Franchi and Ingrassia are two would-be thieves who get trapped by some foreign spies when they break into a villa. One of the spies plants a phony formula for a secret weapon in the teeth of one of the bumblers, and a madcap chase ensues. The spies let the enemy know that Franchi and
Ingrassia have the "real" formula. As it turns out, they do have it, and the chase intensifies. Finally, Americans help the pair out by taking the encoded teeth, and the two fools go back to their life of petty crime. Inane and boring comedy.
