Hwa Pyeong and Mateo stop the possessed woman, Kim Yoon Hee, from committing murder—at least that is what they think. But the police find the dead body of her boyfriend in a parking lot, and she becomes the prime suspect. Detective Kang comes back to the hospital to take Kim Yoon Hee, but she is gone already. The detective and the exorcist duo must find her and cast out the demon before she does something horrible.