Sanatorium Seventh Heaven

What secrets does the abandoned sanatorium, lost in the mountains of Abkhazia since Soviet times and seemingly built far from prying eyes, hold? Does its promising name live up to the hopes of its patients? What do they treat in... the empty, half-destroyed building, which from a distance resembles Dracula's castle? It was not a desire to improve his health that brought Lev to this distant 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 escape seem impossible? And what relation does the family secret have to everything happening?