For those unfamiliar with the series, Infernal Affairs follows the story of two undercover police officers, Chan Wing-yan (Tony Leung) and Lau Kin-ming (Andy Lau), who infiltrate a powerful triad organization. The first film, released in 2002, was a critical and commercial success, praised for its unique take on the undercover cop genre. The sequel, Infernal Affairs II, continued the story, delving deeper into the complexities of the characters and their situations.
Ming, a young, ambitious officer in the Organised Crime and Triad Bureau (OCTB), stared at the old case file on his desk. The label read: Closed – Operation Eden . Lead signatory: Inspector Lau Kin-Ming (Deceased). The file was a ghost. Everyone knew the official story: Lau Kin-Ming, a decorated hero, died a martyr in a shootout ten years ago. Ming also knew the other story—the one whispered in locked server rooms: that Lau had been a mole for the triads. And that the real hero, Chan Wing-Yan, had died forgotten, buried as a criminal. Infernal Affairs III