The movie centers on an introverted girl who participates in a sleep study, leading to unusual occurrences. It approaches themes of sleep paralysis and shadowy figures from an unconventional angle. I was captivated by the subject matter, even though it unfolds at a glacial pace—it felt like it could have been trimmed by roughly half an hour; viewers should be prepared for that. The film deliberately withholds information, instead offering unsettling visuals and a surprisingly meaningful plot development toward the finish that resonated with me. Your experience might vary.

Source on TMDB