Gonjiam: Haunted Asylum (2018)

Two boys livestream themselves exploring the abandoned Gonjiam Psychiatric Hospital, where rumor states that the hospital's ping pong-loving director murdered all the patients before disappearing. The two head to Room 402, the intensive care unit, which no one has ever managed to open. After the sound of a ping-pong ball is heard, their livestream abruptly ends, with a fleeting glimpse of a ghostly face.

News of their disappearance prompts Ha-joon, owner of the YouTube channel "Horror Times", to investigate the hospital. He enlists six people—three women (Ah-yeon, Charlotte, and Ji-hyun) and three men (Sung-hoon, Seung-wook, and Je-yoon)—for the livestreamed exploration. While the six enter the building, Ha-joon remains at a base camp nearby to oversee the broadcast.

To spice up the livestream as with previous "Horror Times" videos, Ha-joon, Sung-hoon, and Seung-wook have prepared fake scares for the explorers and viewers to react to. Once inside, the group make a few "discoveries" (staged in advance) to up the tension. Outside, the camp's propane burners turn on by themselves. Ha-joon's equipment fails, temporarily cutting him off from the group.

Je-yoon and Ah-yeon attempt to open Room 402 while the others explore the common room, where they find closets with holes in them. When Ji-hyun places her arm inside one, it is pulled and scratched. Frightened, Ji-hyun and Charlotte bail out and leave the asylum.

Meanwhile, Ha-joon watches footage of all six participants together and becomes unsettled, unsure who filmed it. Nevertheless, he convinces Seung-wook and Sung-hoon to continue the scripted livestream, promising them higher pay. In the supply room, they encounter objects moving by themselves, and Seung-wook is knocked unconscious. Sung-hoon is dragged out of the room and also struck unconscious.

Outside the hospital, Ji-hyun and Charlotte repeatedly see a marked tree, and realize they are walking in circles. Ji-hyun falls into a trance and her eyes turn black. Terrified, Charlotte flees toward the camp but finds herself back inside Room 402. After several scares, a naked man appears and drags her into the darkness.

Sung-hoon wakes and runs to Je-yoon and Ah-yeon, who are still trying to open Room 402. He admits to them and on camera that some earlier events were staged, but now real paranormal forces are happening and they must rescue Seung-wook. A ping-pong ball is suddenly thrown at them, followed by Charlotte's screams from inside Room 402. The group's infrared cameras detect a presence as the door finally opens.

Sung-hoon, Je-yoon and Ah-yeon find themselves trapped in a dark, water-filled room with no exit. Ghostly apparitions surround and possess them one by one. Ha-joon, seeing his view count nearing one million, leaves for the asylum. Using his drone camera, he spots someone struggling near a window inside one of the rooms on the top floor. He enters the asylum to investigate, and, looking through a window, sees himself watching the previous footage of the struggling man. Ha-joon becomes paralyzed with fear as the floating corpse of the director creeps up behind him. As he hesitantly turns his camera and viewfinder to film himself, the ghost of the director screams and strangles Ha-joon to death. Later, Seung-wook awakens strapped to a wheelchair and is dragged into Room 402 as multiple ghostly patients observe him from inside their rooms.

The livestream is revealed to have ended abruptly after Sung-hoon admitted it was scripted. Unaware of the paranormal events inside the asylum, viewers mock the failed stream, which had only peaked to 503 viewers, far fewer than the near-million Ha-joon saw on his screen.