1975 - Cold War between the USSR and the USA, an arms race. Nuclear physicists are working hard. In the Soviet Union, a leak of classified information about the development of the Satan rocket is becoming apparent. It would seem, how can a police major be connected with the intelligence of the special services? However, it was he, Ivan Petrovich, dismissed from the Moscow Criminal Investigation Department, working as an ordinary precinct officer, who provided invaluable assistance to the KGB in the capture of an American spy.

The beginning of the 70s. Major Cherkasov and his team are investigating a new case. This time we are talking about robberies. And this is the sphere of management for combating theft of socialist property (UBKhSS). During the robberies, the bandits mercilessly kill witnesses. The robberies are well organized and well thought out. And someone very knowledgeable prepares them. The leadership decides to unite the efforts of two departments of the Moscow militia against the "outlaws": the Ministry of Internal Affairs and the UBKHS. Together they are preparing an operation to arrest the gang.

The third film of the project about Cherkasov's task force is "Goznak". Based on another famous story - the robbery of the State Bank of the Armenian SSR in 1977, when the Kalachyan brothers swept the treasury for one and a half million rubles (two million dollars at the then exchange rate). It was the largest kidnapping in the Soviet Union. 1967 year. Moscow. A fashion model from the House of Fashion was killed. A group of Major Cherkasov arrives at the crime scene. He urgently introduces his man, Sonya Timofeeva, into the Fashion House, whose main task is to obtain information about the relationship between the employees of the Fashion House. Soon, another fashion model dies. And simultaneously with this murder, a very daring crime is taking place - the robbery of Goznak ...

Ivan Cherkasov, as always, is investigating a complex and complicated case. A student of an architectural institute was thrown from the roof. His mother committed suicide. The suspects are residents of an elite house, cultural figures.

1980 year. Pre-Olympic Moscow. The MUR people were tasked with preventing a single crime in the capital, clearing the city of all unreliable elements. Even the slaughter department is involved in the execution. Cherkasov and his team are entrusted with the fight against prostitution and "bad luck." But, instead, Ivan Petrovich is forced to investigate one murder after another. In the center of events is a bandit named Skull who recently left the prison. Almost all of the murders committed take place under the Skull, but there is no direct evidence of his involvement in the crimes. It is impossible to prove his guilt, but at the same time his innocence is under great doubt: as if someone invisible constantly saves the Skull from death, clearing the way for him. But who might be interested in this?

A crime series about MosGaz - Valdimir Ionesyan, one of a firsts Russian serial killers caught in 1962 in Moscow.

Events take place on the outskirts of Moscow in 1965. In the center - the story of the exposure of a woman executioner who, during the war, at the behest of the Germans, shot prisoners, partisans, and civilians. This is actually a separate civil war of the fanatic with their people. During the war, she was barely 20 years old, and on her account there were already fifteen hundred murders. She shot her victims with a machine gun, hiding behind a toy bunny mask. Then she drank a bottle of moonshine and then appeared the next morning without a mask and lived an ordinary life, the same as everyone else ... Therefore, after the war, it was very difficult to figure out the killer. This case was assigned to the chief investigator. His suspicions fall on one or the other woman ...

As a child, Liza Zaretskaya saw her parents die. She couldn't speak for two years after that and learned to hear people's thoughts. Liza grew up and became a therapist. Her daughter Dasha inherited her gift. Dasha has just graduated from school and wants to study psychology. Albert Kling, a friend of Liza's, is doing complex psychological research and performs tests on Dasha, much to Liza's displeasure. Suddenly Dasha's classmate Ksenya, who was also Liza's patient, goes missing. Police Captain Mikhail Zhikharev asks Liza and Dasha to help his investigation. Dasha's boyfriend Mitya, Kling's assistant joins the search. But Dasha goes missing too.

A former opera singer from Petrovka is paired with a psychic girl. With private money, they are engaged in searching for missing persons, investigating murders, deaths and other cases where the police were powerless.

1978. Cherkasov's group begins a new investigation: a young gamer Kira Miller and her lover Colonel Potapenko were killed at a dacha near Moscow. It turns out that shortly before her death, Kira lost 400 thousand rubles in a katrana - an underground casino. To find out all the circumstances of the case, Major Cherkasov decides to send Sonya Timofeeva to the katran. At the casino, Sonya meets Boris, nicknamed the Musician, who works there as a pianist. They have a whirlwind romance. But one day, in front of Sonya, Boris commits a crime. Realizing that she is in danger, he looks for a way to save her.