This is the story of a mysterious bar that, in addition to the standard services provided by any drinking establishment, offers a rather unusual option. Visitors to this bar can, for a unique fee, make one phone call to a loved one who... is no longer alive. At the center of the events is investigator Andrey Morozov, who is searching for his wife's missing son, Viktor. All the evidence leads to the enigmatic bar "One Call," which disappears and reappears in different locations, leaving behind a trail of bodies.