An undercover agent is assigned by his corrupt chief to infiltrate a rival department and sabotage their investigation of counterfeit currency. What he discovers is the counterfeiter's real plan. To overthrow the capital. Not by flooding it with funny money, but with an army of undead.

The four constables Emotionless, Iron Hands , Life Snatcher and ColdBlood are specially skilled in their own individual super powers. When the four constables of the Divine Constabulary investigate a murder in the suburbs, they unexpectedly stumble on clues to the murder of Emotionless's family 15 years ago.

The reputation of the Four constables survives, but since Emotionless’s departure, there have been changes at the Divine Constabulary. The four Coldblood, Iron Hands, Life Snatcher, rescue Zhuge Zhengwo from An Yunshan’s mountain fortress, then with the Emperor and Di armies, they attack. But An Yunshan absorbs their power, which means the constables and their allies now face their most lethal opponent yet, a nearly invincible kung fu master who won’t stop until he has absolute power...