A group of five workers are sent to a remote area at an abandoned sanatorium. Sanitarium administrator moved temporarily to the sanitarium in order to ensure that no one enters the building before its demolition. Workers arrive on site will ensure that it will not leak gas. But the sanatorium has over 300 rooms and whole kilometers of pipes, their task will not be very easy. Soon, workers discovered the sanatorium dark past realizing that easily demolishes a building but its history can not be deleted too easy.