The agent of Dnepropetrovsk underground Ludmila Zaikovskaya uses the likening of german officers to her. She figures out about the covert operations of the “Third Reich." In 1942, the Nazis denounced Lyudmila and her comrades. But after the war, the collected data were against Ludmila and her name was tainted. In 20 years, relying on erroneous historical data, a young journalist Alexey Trofimenko writes an article about Ludmila’s betrayal. But the witnesses who say about Zajkowski’s innocence appear. Alex tries to uncover the truth and restore the glorious name of a brave woman.