The director of a detective agency discovers a jewellery thief likes to attends the theatre. So he hires two clumsy and bumbling detectives to guard all the theatres in the area. The two investigators now go from one venue to another attending various Italian magazine shows.

Achille Scorzella, a poor, unemployed and hungry devil, having been mistaken for a piano tuner, happens in the home of some new riches.

An English singer thinks his Italian wife has cheated on him and goes back to England. He is then involved in drug trafficking and ends up in jail. Luckily enough after a while the real culprit is revealed and he can go back to Italy and his wife.