An operation in Thailand against a notorious drug lord changes the destiny of a Hong Kong Police Department narcotic team. Five years later, a drug dealing brings them together again.
When the Ronin Gang robs an armored car, three cops — Chan, Fong and Wai — go on the warpath. Each has a personal interest in bringing down Ronin leader Tien: he killed Chan's fiancée, humiliated Fong and kidnapped Wai's brother.
Chan Ka Sing, Choi Kai Kwong and Lee Yuk Lan had been best friends since they were young. They hung out all the time at the lighthouse. Everything was fine until Ka Sing and Kai Kwong both fell in love for Yuk Lan. Compared to ambitious Kwong, Yuk Lan chose Ka Sing.
