In modern Hong Kong, the unconventional freelance exorcist, Wong Wing Fatt, has perfected an alternative method to banish the malevolent rogue spirits straight to Hell, putting his rare gift to good use. But, when someone posts a video of one of Fatt's successful rituals, it attracts the unwanted attention of a vengeful demon that feeds off medicine men. Now, Wong is next on the list, and nothing can stop the evil entity from getting his soul. But, can Fatt, the keeper of darkness, along with a bold journalist and a girlfriend from the beyond, confront pure evil?