May 1945. The war has just ended, but the liberating soldiers, who reached Berlin with victory, are in no hurry to let them go home: the service continues for them. The brave fighter pilots are very upset by this circumstance, and most of all, the handsome Vadik Dobromyslov, who can't wait to marry his pen pal, Nastya. When his friend Lesha Kaverin is sent on a business trip to his homeland, Vadik asks him for a favor: to sign with Nastya under the name of Vadik, according to his documents, and bring her to Berlin legally as his wife. Lyosha agrees to the adventure, but it is not possible to keep the plan a secret. Everyone wants to get married, and Lyosha flies out of Berlin with documents for 4 of his comrades. On behalf of each of them, he must marry in Nastya's village. He has a day for everything about everything.

A rich heiress, Maria Sorokina, goes missing after a quarrel with her husband. Boris Novinsky, head of the police station, entrusts this case to a young detective, yesterday's intern, Alina Novinskaya, his daughter. It turns out that a maniac who strangles and disfigures young women who look like Maria Sorokina operates in the town. The search for Maria brings her husband, Mark, and Alina together. Seven years later, Alina and Mark have a strong family. But one day, Mark goes on a business trip and meets there a woman who looks like his missing wife, Maria, like two peas in a pod. Mark is unable to master the feelings that have overwhelmed him again and leaves Alina for a woman who so frighteningly resembles his late first wife. Meanwhile murders of young women are renewed in the town - a mysterious maniac, already forgotten by everyone, goes hunting again. Alina, abandoned by her husband, returns to the police work and the search for a maniac, which leads her to a shocking discovery.

Budding metropolitan investigator Oleg Khlebnikov kills a criminal during detention. Oleg is sure that the villains should be punished not only by the court. The deceased turns out to be a media person, and in order to hush up the scandal, his death is called an accident, and Khlebnikov is sent to the taiga city to sit out the watch, and soon return to Moscow. It won't work on a quiet business trip.

Two irreconcilable enemies, operative Lieutenant Voronovsky and the recidivist thief Chuma, are forced to infiltrate the Bandera bandit underground together. Their goal is to prevent major terrorist attacks against representatives of the Soviet government, the garrison of internal troops and the local population.