What secrets does the sanatorium, abandoned since Soviet times, hide in the mountains of Abkhazia, as if specially built away from prying eyes? Does its promising name live up to patients' expectations? What is being treated for in an empty, dilapidated building that from afar looks like Dracula’s castle? Leo was brought to this distant place not by a desire to improve his health, but by the search for his missing daughter. Will he be able to find her where the corridors, like in a labyrinth, lead anywhere but to the exit, and it seems impossible to get out of there? And what does a family secret have to do with all this?