Lawyer Jessica Yau finds out about her husband's money laundering scheme and gets shot in the head. She survives, but loses her memory. She is cared for by Mei Mei Chen, a nurse she screwed over in a lawsuit before being shot.

Joe, a police officer, has a happy life with his wife, who's pregnant. But one day when he gets a tip that a bank is about to be robbed, he rushes to it but killed. The hostage Gucci then holds the loot. Joe becomes a vampire when a black cat jumps on his body and is hit by lightning. Not until he is sent to the hospital when he passed out, does he notice he's dead and needs electric recharge to be alive. In order to keep his wife from being sad, he doesn't tell her the truth. Even when his best friend Fung and Gucci find it out, he asks them to keep in secret. To get back the loot, the robbers seize both Gucci and Joe's wife, forcing Joe to bring the loot to exchange them. Along with Fung, Joe goes to rescue Gucci and his wife, while his wife delivers a baby. After a severe fight against the robbers, Joe finally wins but drops down as he runs out of his electric power...

A cop is losing the control of his right hand and cannot pull the trigger on time anymore. Before any accident happens, he decides to resign. Meanwhile his friend and informer is brutally murdered in Malaysia. Before leaving the force, he decides to find the killers with the help of his buddy, a young cop and an inspector from Kuala Lumpur.

Jason Chan, a Hong Kong lawyer, is angry at the way the law protects criminals and decides to take the law into his own hands, dishing out vigilante justice when a key witness and his entire family are murdered. But hotshot cop Cindy Si is soon on Chan's case, and the situation unravels into a fight that only a few will survive.