Three years after former bomb disposal officer Poon Sing-fung left the police service, he finds himself a top wanted suspect in a serial bombing case in Hong Kong. The police think he is involved after finding him in a coma and injured from the explosion at one of the crime scenes. He is interrogated and imprisoned after waking up from his coma. As he suffers from amnesia, he can`t recall if he has really spent the last two years involved in bombing attacks. To escape from prison and prove his innocence, he teams up with his comrade in arms, bomb disposal officer Tung Cheuk-man. Meanwhile, his ex-girlfriend Pong Ling, now the Counter Terrorism Response Unit`s chief inspector, persuades him to infiltrate the Resurrection Group to find out about the criminal organisation`s next terrorist move.