The Trough

Yu Chau is a cop who has gone so deep undercover within the triad. He can no longer tell which side of the law he's on. When he accidentally kills one of his pals in an operation, he runs off into the boonies to lick his wounds. Upon his return, he teams up with fellow officers Jim and Jackie to catch a triad Boss, only to unveil collusion with government officials at the highest level. Yu Chau once again faces the dilemma of taking the law into his own hands...

Xu Jinglei

Boss

Nick Cheung

Yu Chau

Lam Suet

Bo The Nine Fingers

Ni Dahong

Mr Zhen

Vithaya Pansringarm

Thai Boss

Yuen Wah

Chun Hua

Louis Cheung

Ji Zha

He Jiong

Ah Zhang

Nan Yu

Jacky

Maggie Cheung Hoh-Yee

Diana

Michael Miu

Brother Yun

Paul Chun

Director Li

Chris Collins

Frankie

Haitao Li

Ah Jun

Philip Ng Wan-Lung

The Guard Boss

Feng Yichao

SWAT

Lu Mingming

Coach

Song Binwei

Fei Fu