An ethically-challenged professor has a man murdered and attempts to bring him back from the dead. The man returns possessed by a demon from hell who will stop at nothing to get his revenge on man kind.
A young boy Hee-Joon is possessed by an evil spirit. Nun Yunia tries to save him, assisted by Nun Mikaela. Priest Paul attempts medical treatment, while Priest Andrew performs an exorcism to rid Hee-Joon of the spirit.