Emotionless has left Six Doors, as has Cold Blood, who has decided to investigate the death of Lord Bu on his own. The departure of two of the four constables has effectively left Six Doors defunct. At this time, trouble begins to brew in the Imperial Palace as Emperor Huizong plans to travel incognito to the outside world. When he is almost assassinated and subsequently disappears, Cold Blood, Emotionless, Iron Hands and Life Snatcher must band together once again under Master Zhuge to save the empire from a massive conspiracy. Written by hery-yanto

The Sequel to The Four, based on the best-selling novel by Woon Swee Oan. The four constables, Emotionless (Crystal Liu Yifei), Iron Hands (Collin Chou), Life Snatcher (Ronald Cheng) and ColdBlood (Deng Chao), 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. While investigating the case, the constables discover facts about their past, facts they preferred hidden, and facts that force them to choose between past grudges and their new lives at the Divine Constabulary. A series of bloody battles confront them as the story unfolds, an undeniable truth becomes clear - even if they survive this storm, a bigger one is brewing just over the horizon.