Undercover

Returning to the force after being undercover in the triads, police officer Ken cannot shake the feeling that his colleagues treat him differently. To escape the pressures, Ken takes drugs, with his drug dealer Ah Fai the only friend he can confide in. However one day, Ah Fai kills a police officer in front of Ken in order to save his stash of drugs, and to protect himself, Ken destroys the evidence. But he forgets his most important witness – Ah Fai.Soon this crime will push him to make more mistakes, sending him on a downward spiral.