Phantom

A patient comes to his senses in a mental hospital. He doesn't remember who he is and how he ended up there. The chief doctor tells him that his name is Ivan and that he was forced to stay in the hospital. When the chief doctor dies, Ivan and his neighbor from the ward Arthur and a police detective Stas Krasivtsev start to investigate his death.

A lawyer Piforskiy and Ivan's wife Nastya whom he can't remember come to the clinic. They assure him that his name is Pavel Alpatov. They help him get discharged. Ivan-Pavel demonstrates brilliant analytical skills. He helps Stas Krasivtsev, the police detective, to solve crimes. Ivan-Pavel wants to find out more about his past with Stas's help.

Ivan-Pavel and his old friend Lekha are trying to find compromising materials against the Stefania pharmaceutical company involved in Ivan's kidnapping. They are being attacked and warned not to continue with the investigation. Ivan-Pavel thinks that Lekha and Nastya are cheating on him. Stas and Ivan investigate the death of a man who was found in a rubbish bin with five bullets in his chest.

Together with Stas, Ivan is trying to find a maniac who strangles girls and leaves their bodies in rubbish bins. To sort out the Stefania case, Ivan-Pavel turns to lawyer Piforskiy; however, the latter doesn't want to start a conflict. Ivan-Pavel falls in love with Nastya and finally comes to believe that she is indeed his wife.

Ivan-Pavel keeps forgetting things; he can't remember what he had been doing just recently, so he decides to continue his treatment. Olga believes that Ivan's state deteriorates and worries for him. Nastya is offended with his suspicions of her unfaithfulness and leaves Ivan-Pavel. Stas Krasivtsev and Ivan-Pavel come to the zoo where a bear was shot down.

Ivan-Pavel decided not to dig into his past and wants to start the life anew instead. He plans to make up with the management of the Stefania. Ivan-Pavel thinks that all his troubles are behind him when Nastya is murdered before his very eyes.

Nastya's death devastates Ivan-Pavel. He wants to revenge on the Stefania and turns to Piforskiy for help again. When he and Stas are on the way to the summer cottage of the Stefania's director, Lekha suddenly disappears. Obsessed with thoughts about Nastya, Ivan-Pavel takes it out on Olga.

Stas now believes Ivan-Pavel and offers him help in investigating the connection of the Stefania with the criminal authority Senya Dikiy. They find dead bodies buried in concrete at the Stefania's construction site and make this fact public. Ivan-Pavel accidentally sees an ad with Nastya and realizes that she is an actress.