It tells the story of an almost perfect crime that happened in one of the most important circuses in the country, the Tihany Circus. Several are the suspects that will come to light, but only one is responsible for the murder of the important businessman. Only an old commissioner (Tincho Zabala) will be able to discover the real culprit.
When they are killed by the leaders of the two gangs fighting for control of the underground game, the conductor who is the heir of one of them turns his musicians into gangsters.
When a gangster is murdered, the victim's daughter sets out to track down her father's killer. She soon suspects her friend and her own mother may have been involved in the murder plot, in this heavy-handed and tragic crime drama.
The young and inexperienced godson of a millionaire falls for a singer who is married. The millionaire opposes the relationship because he feels a "strange tenderness" for the boy.
A train stops for a break in the station of a small town. That random moment allows the railway chief to fall in love with a beautiful passenger, who ends up wrapping him in a complex police plot.