Guimoon: The Lightless Door

In a community center where a mass murder took place years earlier and it involves a paranormal investigator who discovers a door to another world.
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.