American agents hijack a plane on the Ostrava-Prague route to launch a campaign against the People's Democratic Czechoslovakia. The plane lands in West Germany, but the Americans have an unexpected problem convincing the hijackers to stay in the West. Based on a true story.

Vladimír Olmer is a student at the Faculty of Medicine. His father, a famous Prague surgeon, is rightly proud of him. One day, Vladimír accidentally meets his former classmate Emil Prokeš. He introduces him to his frivolous friends, who only care about how to earn money for an idle life without any effort. The trusting Vladimír takes a liking to his new friends, especially when the beautiful Helena shows interest in him. Soon, parties with alcohol are more important to Vladimír than his studies. Mirek, his only real friend, warns him in vain. His frivolous life ends with a fateful party at which Emil is shot. The case cannot be covered up, the security services get involved, and Vladimír is expelled from the faculty for a year.