A suspicious amnesiac man is brought to the duty office. He had been wandering along the highway toward Moscow. To everyone’s great surprise, in the vagrant they recognize investigator Ivan Mukaev, who disappeared under mysterious circumstances. Before his disappearance, Mukaev was searching for a serial killer who attacks women. Whether or not Ivan gets his memory back determines whether the criminal terrifying the entire city will finally be caught. Mukaev’s wife Zoya and his best friend, the operative Ruslan Svistunov, do everything to help Ivan remember his past. But the things he recalls cannot be connected to investigator Mukaev: an expensive car, a Moscow office where you can take a large amount of money without any obstacle, a beautiful model—a real high-society type from the capital… Either Ivan lived a double life, or someone else has taken his place. But who is he?