A beautician and her crooked boyfriend attempt to rob the bookie operation located in the back room, but when the plan goes wrong, they frame an innocent man.
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.
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.
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.
A hated country gentleman is murdered, and the inspector on the case takes the veiwer through his thoughts about the possible murderer and motives as he questions everyone concerned.