Both The Priests and Dark Nuns revolve around the theme of exorcism and the battle against evil forces. In The Priests, Father Kim and Deacon Choi investigate whether a young girl named Young-shin is possessed by a demon or influenced by human forces. Meanwhile, in Dark Nuns, two nuns, including Nun Junia, strive to save a boy named Hee Joon from an evil spirit, with the people around him also struggling to help. Both stories highlight the intense struggle to save the possessed individuals from dark, supernatural forces.
To save a girl in danger, a priest and deacon jump into a mysterious case.
Desperation drives two nuns to perform an exorcism no nun should attempt. With a possessed child at the mercy of evil and the opposition of the Catholic Church, they take on the dangerous forbidden rituals themselves, putting their immortal souls in grave danger. They must confront the terrifying cost of their sacrilegious actions, but one goal remains: the boy must be saved at all costs.
