War
During a shootout against Chinese Triads at a dock warehouse, FBI agents John Crawford (Jason Statham) and Tom Lone (Terry Chen) stumble across the notorious assassin Rogue (Jet Li), a former CIA assassin who now works for the Japanese Yakuza. Rogue ambushes Crawford and is about to execute him when Lone appears and shoots Rogue in the face, causing him to fall into the water. His body is never found, and he is presumed dead. However, Rogue survives and his retaliation against Lone, his wife and his daughter, leaves three corpses in the ashes of their home.
Three years later, Rogue re-appears, working under Chinese Triad boss Chang (John Lone). Rogue is assisting Chang against Chang's arch-enemy and Rogue's former employer, the leader of the Japanese Yakuza, Shiro (Ryo Ishibashi). Rogue's task is to recover a pair of antique gold horses, family heirlooms of Chang that were stolen by Shiro many years ago. However, Rogue is secretly setting the Yakuza and the Triads against each other, in order to push the two sides towards all-out war.
Now the head agent of the FBI's Asian Crime Task Force, Crawford is determined to hunt Rogue down and exact revenge for his partner Lone's death. Crawford's pursuit of Rogue has taken a toll on his personal life; he is now separated from his wife, and is so obsessed with his work that he is unable to have a stable family life. Crawford comes close to catching Rogue in the wake of Rogue's various killing sprees against the Triads and Yakuza, but Rogue always manages to stay one step ahead.
Ultimately, it turns out Rogue has been working for Shiro all along, his mission being to gain Chang's trust in order to betray him later. However, Rogue shows reluctance when he is ordered to kill Chang's wife and child as well. Although Rogue does eventually execute Chang, he kills the Yakuza minions sent to help him kill Chang's family and helps Chang's wife and child escape to safety.
With Chang dead, Shiro is finally ready to come to America, where he intends to take over and expand Yakuza business operations. However, he is confronted by Crawford and the FBI; Crawford presents Shiro with proof that Rogue has betrayed him and spared Chang's family, but Shiro refuses to assist Crawford in locating Rogue.
Later, Rogue appears to deliver the horses to Shiro personally. Knowing of Rogue's betrayal, Shiro captures Rogue and demands the location of Chang's family. Rogue kills all of Shiro's men, and engages in a sword fight against Shiro himself. Rogue reveals that he is actually FBI agent Tom Lone (who, after receiving plastic surgery, changed his voice to obtain a Chinese accent); after the real Rogue killed Lone's family three years ago, Lone managed to overpower and kill him. Lone then assumed Rogue's identity (aided by their similar facial injuries, and Rogue's known habit of using plastic surgery to disguise himself) in order to get revenge for the death of his family. Rogue/Lone reveals that his actions have all been designed to bring him face-to-face with Shiro, so he could kill the man who ordered the death of his family. Shiro reveals that the man responsible is actually Lone's partner John Crawford; Crawford has been working for Shiro all these years, and gave Lone's identity to Shiro as an FBI agent as well as his home address. Angered, Rogue disarms and decapitates Shiro.
Meanwhile Chang's wife receives a package from Rogue/Lone, inside are the golden horses that belongs to Chang's family and a message reading, "Make a new life". Shiro's daughter also receives a package with the same message and inside the box is her father's head. Rogue then calls Crawford as he was packing up his office, telling him to meet him at the dock warehouse where it all began three years ago. Before going to the warehouse, Crawford enlists the help of Goi (Sung Kang), an FBI sniper who helped in the investigation throughout the film.
At the warehouse, he and Rogue battle each other in an intense hand-to-hand fight. When Rogue reveals his identity as Lone, a devastated Crawford reveals he has been working for Shiro, and that he only gave Lone's address to Shiro because he thought that the Yakuza were only going to rough Lone up to teach him a lesson for shooting Rogue. Crawford says he had no idea Shiro would send Rogue himself to Lone's house to kill him and his family, and asks for forgiveness. Rogue informs Crawford that "Tom Lone is dead, my name is Rogue", implying that his old life is over and he is starting a new life as Rogue. He then prepares to shoot Crawford. Goi takes aim and is spotted by Crawford who steps in front of Rogue/Lone and shouts "No!". Rogue/Lone pushes Crawford away and shoots him in the back. The film ends with Rogue driving away and starting his new life with the money that Shiro gave to him.
