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...

The Trough

The story follows Shanghai hitman Zhao as he prepares to retire. He receives two kill contracts, both to take place at the same time and the same location: but the target of one contract is the consignor of the other. In order to make up for a mistake he made long ago, Zhao decides to take on both contracts and to make a fortune for his salvation. But what awaits him is a huge and complex abyss.