Guimoon: The Lightless Door (2021)

Taking place in a secluded community centre rumoured to be cursed after a mysterious mass murder in 1990, the film follows a renowned paranormal investigator who lost his mother during an exorcism and three college students intrigued by the rumours who enter through the door and cross into another dimension.
In 1990, at a secluded community center, the custodian murders all the guest lodgers and kills himself. Ever since, on every Old Year’s Night, paranormal events begin to take place within the building. Eventually, the center is shut down and left abandoned for years. A renowned paranormal investigator who had lost his mother during an exorcism and three college students who heard about the rumor of the unexplained phenomena heads over to the building, resolved to uncover the buried secret.