The catch, no one will know but Wong that Chan is secretly a police officer. At the same time, a powerful gang boss, Hon Sam, plants multiple triad members into the Hong Kong Police Force, including the young Lau Kin-ming.Infernal Affairs full Movie Download In korean.
The film then skips to ten years later, Chan is still working undercover and is experiencing great stress from his continuous undercover duty. His boss Wong is sympathetic and promises that they are getting close to taking down Hon Sam. At the same time, Lau quickly rises through the ranks of the police force, and has become instrumental in the team surveilling and investigating Hon Sam.
When the police force is preparing to orchestrate a raid on Hon Sam, Lau is brought into the operation. During the planned raid, Lau is able to determine that Wong is communicating with someone on the inside of Hon Sam’s operation using Morse code. However, Lau is not able to find who was communicating with Wong, which the audience knows is Chan.
Before the raid, Lau alerts Hon Sam, giving the gangster enough time to tell his men to get rid of the drugs.
Because the gangsters were alerted to the police operation, Wong also knows that there is mole in the police force providing information to Hon Sam. Now, Wong and Hon Sam are focused on rooting out the mole in their respective operations.
With both sides aware of moles, Wong becomes concerned about Chan and prepares to pull him out of the undercover operation for fear of his safety. Before he can do so, Wong is caught by Hon Sam’s men who attempt to extract the identity of the mole from him. When the inspector won’t give them the information they need, they throw Wong off the building to his death in front of Chan.