Third movie of the famous Czech adventure trilogy: Osada Havranů Na veliké rece Volání rodu

It tells about the collaboration of Mongolian-Czech geologists who are discovering treasure deposits in Mongolia, and shows the events that happen to them in a humorous tone.

Soviet engineer Kuznecov is coming to Prague as an expert on work with the tunneling shield in construction of the metro. He is returning after more than thirty years. In May 1945 as a young soldier in the Red Army he was seriously injured in the liberation of Prague and while recovering experienced a great love with a young teacher called Vera.

The protagonist is the ordinary and still blameless Evžen Macík, who one day, while waiting for his lover Maria, witnesses a robbery of a savings bank. When the robber drops a briefcase with half a million in loot, the loot falls in front of Evžen, who can't resist, picks it up and disappears. He knows that someone might have seen him at the scene of the crime, so he turns himself in as a witness to Captain Richter, who is investigating the case. Shortly thereafter, however, Maciek is contacted by the robber, who begins to force him to hand over the money with constant threats, initially only by telephone. In addition to pressure from the robber, pressure from the police is added because Captain Richter correctly suspects that Macík is hiding something from him. The mounting pressure leads to Eugene starting to make mistakes.

Placek (Josef Kemr), the head of research in a chemical plant, appreciates the help of his younger colleague Bernát (Alois Svehlík) in the creation of a new synthetic material.

Wild Swine is actually an ironic name for the great search operation of Prague's criminologists, who in a tangle of criminal activity of various kinds were digging around like wild swine before they managed to solve a complicated case. The story takes place in a variety of social spheres, from the Roma people to the world of Prague prostitutes and bakshellers to prominent people.