Former bomb disposal officer Poon Shing-fung (Andy Lau) fell into a coma in an explosion and becomes a top suspect of a terrorist attack after the police suspects of his ties with the criminal organisation, Vendetta. After waking up from his coma, Poon, suffering from memory loss caused by the explosion, escapes from custody in order to investigate the truth and prove his innocence. On his lonely and helpless road, Poon enlists the help of his comrade in arms, bomb disposal officer Tung Cheuk-man (Sean Lau). At the same time, Poon's ex-girlfriend, Pong Ling (Ni Ni), who is now the chief inspector of the Counter Terrorism Response Unit, persuades Poon to find out Vendetta’s next terrorist move and prove his innocence. Poon realises that exposing the truth is just as challenging as disposing explosives, risking his life as he races against time.