Gabriel Yulaw (Jet Li), once an officer of the "Multiverse Authority" (MVA) that polices interdimensional travel (via detecting wormholes), seeks to hunt down all variations of himself in alternate universes. By killing all 124 of his other selves (becoming the last version) and absorbing their life energies, he believes he will become an immortal godlike being called "The One". Yulaw is briefly captured by MVA agents Rodecker (Delroy Lindo) and Funsch (Jason Statham), only to escape from captivity during the trial sentencing him to life in the Stygian penal colony in the Hades universe.
The film begins during the French Revolution, with the aged Marquis d'Apcher as the narrator, writing his memoirs in a castle, while the voices of a mob can be heard from outside. The film flashes back to 1764, when a mysterious beast terrorized the province of Gévaudan and nearby lands.
The film starts with Huo Yuanjia fighting three Westerners: a British boxer, a Belgian lancer, and a Spanish fencer. Huo defeats all three of them and has a flashback before the next fight with a Japanese fighter Anno Tanaka.
U.S. Army Captain Frank Dux, trained from his youth in the ways of Ninjutsu by Senzo Tanaka, honors his mentor by taking the place of Tanaka's deceased son Shingo in the illegal Kumite martial-arts tournament. During his childhood, Dux and a group of friends invaded Tanaka's home to steal a katana, but he was apprehended by Senzo and Shingo while attempting to return the katana to its display rack. Impressed by Dux's honesty and lack of fear, Senzo had him train with Shingo in martial science. Following Shingo's death, Senzo agreed to train Dux as a member of the Tanaka clan. When Dux's superiors learn of his invitation to the Kumite, they refuse to let him go; in return, he goes AWOL, says goodbye to his mentor and leaves for Hong Kong. Two CID officers, Helmer and Rawlins, are summoned to track down and arrest Dux for desertion.
Liu Siu-jian (Jet Li), a Chinese intelligence agent, is sent to Paris to help apprehend Chinese mob boss Mr. Big (Ric Young), who is involved in heroin smuggling. He meets Inspector Jean-Pierre Richard (Tchéky Karyo), a corrupt and violent French police detective, at a hotel. Richard tricks Liu into believing he is simply providing reconnaissance of a meet involving Mr. Big. The plans are changed when Mr. Big is introduced to two prostitutes, one being Jessica Kamen (Bridget Fonda), an American woman, who takes him to his room to service him. While Liu and the rest are watching through the surveillance camera, Mr. Big kicks everyone out except for the two prostitutes. After pretending to seduce him, one of the prostitutes then stabs Mr. Big. Overseeing the events from a surveillance room, Liu rushes to stop the killing, but Richard enters shortly later to shoot Mr. Big and the prostitute with Liu's police-issued handgun, framing Liu for the murders.
The film begins with a nightmare of Bruce Lee's father (Ric Young), who sees a terrifying phantom (Sven-Ole Thorsen) in black samurai armor that haunts the young Bruce Lee (Sam Hau). Bruce is shown as a child receiving instruction in traditional Chinese martial arts in a montage that passes quickly through his teenage years in Hong Kong. As a young adult, Bruce (Jason Scott Lee) becomes involved in a fight with British sailors (who are harassing a young Chinese woman) and this results in him having to leave Hong Kong because of the incident. His father suggests that Bruce go to the US, since he was actually born in San Francisco when his father was on a tour there and has a US birth certificate. His father asks Bruce to become a success, so big a success that his name will be famous even back in Hong Kong.
Late night in a bar in the present day, an old man enters and awaits service. Not long after, a group of thugs arrive and attempt to rob the till. The old man defeats them easily one by one with hand-to-hand combat. Amazed, the bartender asks how he learned to fight. The old man replies "it was long ago..."
After being killed in Daredevil, Elektra Natchios (Jennifer Garner) is revived by a blind martial arts master called Stick (Terence Stamp). She is brought to his training compound to learn Kimagure, an ancient martial arts discipline that provides its practitioners with precognition as well as the ability to resurrect the dead. Elektra is soon expelled because of her inability to let go of her rage. She leaves and uses her training to become a contract killer.
The film opens with a group of thieves led by Anthony Fait attempting to steal diamonds for a Frenchman named Christophe, who serves as the middleman for a mysterious employer. When Fait contacts Christophe, a Taiwanese Intelligence Agent named Su intercepts the conversation and attempts to identify the criminals.
In year 689 of the Tang Dynasty, Wu Zetian is about to be crowned the first Empress in China despite opposition from Tang officials. To mark this occasion, she has a colossal Buddha figure built overlooking her palace. However, an official inspecting the Buddha's progress mysteriously erupts into flames. Penal officer Pei Donglai and his superior investigate and interrogates the supervising builder, a man named Shatuo, who was formerly imprisoned after he took part in a rebellion eight years ago. They find nothing, however, and Pei's superior dies soon after in the same manner as the official.
Bart (Bob Hoskins) is a vicious loan shark whose method of persuading men to pay him back involves Danny the Dog (Jet Li), a man with the mentality of a child and a dog. Danny is a violently skilled fighter who stops at nothing to take down his targets, but only when a metal collar around his neck is removed by Bart. Once the collar is on, Danny is a harmless, withdrawn person, with very little knowledge of how to live as a socialised person, and he is constantly bullied by his master Bart.
In Toronto, 22-year-old Scott Pilgrim, bass guitarist of floundering garage band Sex Bob-omb, is dating high schooler Knives Chau, to the disapproval of his friends. Scott meets an American Amazon.com delivery girl, Ramona Flowers, having first seen her in a dream, and loses interest in Knives. As Sex Bob-omb plays in a battle of the bands sponsored by one "G-Man Graves," Scott is attacked by Ramona's ex-boyfriend Matthew Patel. Scott defeats Patel and learns that, in order to date Ramona, he must defeat the remaining six evil exes. He had previously been made aware of this in an email that he received from Patel, warning him of the attack, but dismissed it as "boring.
In 1983, Mason Storm, a Los Angeles police detective, investigates a mob meeting that takes place by a pier. He records a shadowy figure who assures the mob they can rely on his political support. Storm is spotted, but escapes. Unaware he is monitored by corrupt cops, Mason informs his partner and then his friend Lt. O'Malley he has evidence of corruption. While he shops, a store is robbed, and one of the robbers shoots the clerk. Mason stops them and goes home, intent on celebrating with his wife, Felicia.
In just 3 days, three cases of Smiling Murder shock Hong Kong. As he looks into the homicide, the young detective Wang Bu Er (Wen Zhang), the police station's reckless buffoon, makes a shocking statement that this is a serial murder.
Chicago DEA agent John Hatcher returns from Colombia, where drug dealers killed his partner Chico. As a result of Chico's death and years of dead end work, John retires and heads to his family's home in suburban Chicago. John and his army buddy Max reunite and celebrate at a bar. A gunfight breaks out between local drug dealers and a Jamaican gang called the Jamaican Posse, whose leader is a drug kingpin known as Screwface. John arrests one of Screwface's henchmen as the gunfight ends. The next day, Screwface shoots up the house where John, his sister Melissa, and Melissa's 12-year-old daughter Tracey live. Tracey is hospitalized in critical condition.