We get acquainted with a mysterious bar called "One Call Bar". People who enter this establishment disappear forever. This bar has a very charismatic bartender (Danila Kozlovsky) who opens the doors to the world of mysticism and intrigue.
The hero shares a glass of alcohol with a confused customer who got lost in the woods near Moscow and is desperately looking for a way, both literally and metaphorically. Then the bartender offers something completely unusual — to call the deceased daughter and talk to her soul to soul for almost free.
The original currency is provided for making the call — participation in the game of Russian roulette. This idea seems absurd to a believing client, but the positive feedback from other users makes him doubt it.
In addition to the main plot, an additional storyline is unfolding in parallel, dedicated to a lone policeman. The hero stubbornly searches for a mysterious bar, driven by deep personal reasons. It seems that the boy helping the bartender is directly related to this policeman.

Andrei Morozov's situation gets out of control, and Markelov escapes. The businessman's guards put Morozov in his own car and take him to an unknown place to kill him. The policeman is not so simple, with one blow he pushes out first one guard, then another and goes in search of Markelov.
Meanwhile, a downtrodden young woman appears in the bar who wants to call her deceased younger sister. As a child, she looked after her, but overlooked her, and she fell out of the window. After a minute of conversation, she shoots herself and dies. After that, a beautiful girl comes to the bar with a massage therapist lover. She calls Daddy to find out the code to the safe. After the "Russian roulette" she stays alive, but the nervous masseur escapes.
At the moment when Morozov is trying to track Markelov, he does not see where the car is going. After that, he finds the businessman already dead.