In May 1945, a woman in Marienbad reports a murder - committed in 1933 against the German emigrant Professor Lessing. She also names the murderer. Against the wishes of his superior, who does not feel responsible for this case - it was a fascist femicide - Inspector Šedý picks up the trail and arrests the murderer, the German Eckert. Eckert was a fugitive at the trial in 1933, and now the evidence is no longer available. Nevertheless, Šedý does everything he can to convict him. He finds witnesses who support him - anti-fascists, but also former collaborators who want to clear themselves. Reconstructing the case at the crime scene, Šedý is able to prove that Eckert was at least an accessory. He is convicted. After his release from prison, Eckert goes to West Germany, where he demands compensation from his former clients.