What secrets does an abandoned sanatorium from Soviet times—lost in the mountains of Abkhazia, as if purposely built away from prying eyes—hide? Does its promising name live up to patients’ hopes? What are they treating in the empty half-ruined building, which from afar looks like Dracula’s castle? To this remote place, Lev was brought not by the desire to improve his health, but by the search for a missing daughter. Will he find her there, where the corridors, like in a labyrinth, lead anywhere but the exit—and getting out seems impossible? And what does a family secret have to do with everything that’s happening?