Shock Wave 2 – mengisahkan serangkaian ledakan bom yang terjadi di Hong Kong, hal ini juga menimbulkan ketakutan di kalangan publik. Mantan petugas penjinak bom Poon Sing-fung (Andy Lau) mengalami koma di TKP dan menjadi penjahat paling dicari setelah polisi mencurigai hubungannya dengan organisasi kriminal. Poon Sing-fung akhirnya dipenjara namun ia kabur dan meminta bantuan temannya, petugas penjinak bom Tung Cheuk-man (Sean Lau). Hal itu lantaran Ponn Sing-fung merasa tidak bersalah dan keduanya memulai petualangan penuh aksi.

English
When a bomb went off unexpectedly during a police operation to disarm it, bomb disposal officer Poon Shing-Fung got caught in the blast and lost one of his legs. Poon decided to leave the police service. Three years later, the police suspect Poon, who was found in a coma at the spot of a terrorist bombing attack, of being involved in several bombing attacks in the past two years. Poon can hardly remember his past and even his own identity due to post-traumatic amnesia. He plans to escape to find out the truth. Meanwhile, knowing the terrorist organization’s schemes of destroying Hong Kong landmarks, Poon, as the key person between the police and the terrorist organization, could possibly save or destroy lives of the innocent civilians in the city.