On a dark and gloomy night, a group of young adventurers embarks on a mission that will lead them to one of the most terrifying places in South Korea: an abandoned psychiatric hospital, shrouded in chilling legends and rumors of paranormal activities. Determined to do a livestream that will catapult them to fame on the internet, they venture into this eerie site, unaware of the horrors that await them.
As the atmosphere grows increasingly oppressive, the group begins to experience unexplainable events: hallways that seem to close in, whispers in the dark, and fleeting apparitions that defy all logic. Tension among them escalates, and paranoia grips the group as they realize they are not alone; the tormented souls of those who once inhabited the sanatorium seem to come alive, wishing for them not to leave.
With each attempt to escape, their deepest fears are unleashed, and they begin to question their own sanity. The line between reality and the supernatural blurs, and what started as an experiment to gain followers on social media transforms into a desperate struggle for survival. Amidst screams and confrontations, the young people will have to face their inner demons and the dark secrets of the place, discovering that sometimes the quest for the truth can lead to unimaginable consequences.