After the discovery of two murders, Commissioner Chabrier, of the French secret services, is investigating the disappearance of plans affecting the national defense of the country robbed by a gang of international spies.
The third of the Monogram series based on Ham Fisher's "Joe Palooka" comic strip, opens with Knobby Walsh, the manager of Joe Palooka trying to talk his way out of a traffic citation, and the story leading to that point is told in flashback as narrated by Walsh.
Joaquin Monegro feels a huge hatred for Abel Sánchez, who was once his best friend. Over the years, Monegro marries without love, and tries to have his children marry, but not forgetting Abel so far.
A young bullfighter full of illusions triumphs in Mexico and decides to get married there and forget about his old Spanish girlfriend, who by then has just given birth to his son.