The negative press surrounding Joong-soo’s failed exorcism during the prologue was so bad, it forced his brother Gang-goo to relocate his family. However, the worst part for the priest was the death of the possessed girl, right after the demon used her tongue to threaten his family. They do not want anything to do with him (except his young nephew) and he wants to keep his distance from just about everyone. Yet, when the demon starts terrorizing them in the guise of other family members, they are forced to turn to humble Uncle Joong-soo. Of course, he does not believe he can face the evil entity on his own, so he calls in his mentor from the exorcising hotspot of the Philippines.
K-horror has a knack for doing demonic possession, perhaps because Catholicism is widely practiced and also resented across South Korea, so it taps into some deeply held anxieties. Metamorphosis is nearly as scary as The Divine Fury and The Priests, but it arguably takes even darker and more disturbing turns. Kim shows no mercy towards Joong-soo and his family, so brace yourself.