Sanatorium Seventh Heaven

What secrets does the abandoned sanatorium, lost since Soviet times, hide in the mountains of Abkhazia, seemingly built far from prying eyes? Does its promising name live up to the hopes of the patients? What do they treat in the empty, half-ruined building, which from a distance resembles Dracula's castle? It was not the desire to improve his health that brought Lev to this remote place, but 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, making it seem impossible to escape? And what does the family secret have to do with all that is happening?