S Storm

ICAC Principal Investigator William Luk tails a Jockey Club football betting trader and witnesses the trader's murder by the lone assassin Song Yan-sheun. The brutal hit immediately signals to Luk that a larger criminal network is at work.

Inspector Lau Po-keung is assigned to investigate the murder, but Luk refuses to share details from his own investigation, creating tension. The ICAC and the Serious Crime Unit begin a delicate collaboration to unravel the case.

Facing pressure to abandon Luk's line of inquiry, Lau instead proposes that they work together to crack the case. Their tentative partnership marks a turning point in the investigation.

As the police follow leads, the investigation converges on 'Teacher', the elusive kingpin who controls illegal football betting in Hong Kong. The pursuit expands beyond a single murder toward the larger betting syndicate.

Authorities intercept instructions Teacher sent to the assassin Song, revealing a direct link between the hit and the syndicate's operations. The evidence tightens the connection between the murder and the larger crime network.

Lau closes in on Song, but the assassin uses Lau's sister Ebby to slip away. The close pursuit underscores the personal stakes of the case for Lau.

Terry Lun, the Security Manager of the Jockey Club, uncovers suspicious bank transactions, but is murdered by Song before he can relay the information. The violence intensifies as the investigation widens.

Big Boss, the mastermind behind international match fixing, orders the assassination of Teacher and hires someone to kill Song. He tries to destroy evidence linking him to the scheme.

Big Boss kidnaps Ebby to pressure Lau into handing over evidence. Lau arranges a secret exchange, leaving hints for his team about the location.

Lau arrives first at the exchange and confronts foreign henchmen. A chaotic shootout erupts as he fights to protect Ebby and recover the crucial evidence.

Song arrives to take revenge on Big Boss, but is killed by the assault rifle-wielding henchman who is then shot dead by Luk. The deaths punctuate the collapse of the hit team.

Big Boss attempts to flee but is cornered and captured by Luk's team. The mastermind's hold over the operation ends here as the net closes.

With the evidence recovered, Luk arrests Ha Chi Yin, a director of the Jockey Club and the presumed next Chairman, tying up the main political and financial threads of the case. The arrest signals a major victory against the syndicate and signals reform within the Jockey Club's leadership.