In the 1990s, Clark encounters a strange doorway hidden inside a furniture warehouse and crosses into a vast, seemingly endless maze known as the Backrooms. The familiar world disappears, replaced by an unsettling landscape of empty rooms, corridors, strange sounds, and unexplained phenomena. When Clark fails to return, his disappearance draws the attention of Dr. Mary Kline, a psychoanalyst who becomes determined to understand what happened to him. Her search takes her deeper into the mysterious dimension while forcing her to confront memories and fears from her own past. Inspired by the viral internet horror phenomenon, Backrooms transforms the concept of liminal spaces into a feature-length psychological horror experience.