Inspector Sergil is a detective comedy. Sergil, inspector of the P.J., investigates three crimes, helped by two pretty women, Bijou and Nadège.
A gangster, thief of atomic formulas, has a double in the person of a naive musician. A music hall artist who makes eyes at the musician is deceived by the gangster who also takes advantage of the resemblance to track down a band of thugs who are chasing him. Virtue is ultimately rewarded.
