Known as one of Korea's three most haunted locations, Yeongdeok Raw Fish Restaurant has gained worldwide notoriety through viral videos. A crime video analyst is hired to prove the footage was staged after the owner claims YouTubers fabricated the haunting. While every trick is exposed, one final video defies explanation, revealing the shadow of something inhuman. When the horror YouTuber who filmed it disappears, the investigation leads to a chilling truth — the haunting may be real.