OCTB(2017)

OCTB is a Hong Kong crime series following undercover detective Chen Feng Xiang, who resurfaces after eight years away from the triads. When his former younger brother Zhang Zhi Qiang becomes the city's most dangerous triad leader, Feng Xiang is pulled back into the underworld he tried to escape. Joining an anti-corruption task force led by Zhang Shaojun, he must confront old allies and enemies while investigating a missing person case. As the investigation deepens, Feng Xiang uncovers a massive conspiracy rooted in Hong Kong's triad history. Caught between his past and present duty, he navigates moral ambiguity and dangerous loyalties in a world where trust is currency and betrayal cuts deepest.