Frank, an auto mechanic, witnesses the love of his life's demise at the hands of a drunk driver. Frank lets lose his rage, and kills the man. He then goes to prison, where he is framed for the murder of a fellow inmate. Frank sees escape as the only possible way to find out all the answers in the convoluted plot to kill that inmate, and find the proof to convict the true killers.

The young daughter of a tough, female ex-agent is held ransom for the giving over of a top secret information file which outlines the layout of buried nuclear arms being held as garbage under a government restricted cliff seven in the desert. But to discover this she must go to the area and there, with some unexpected help, encounters the kidnappers in a daring shoot-out finish.

The family of cops is back, this time dealing with the murder of a priest tied in with the Russian Mafia, who proceed to try to draw the family off the case.

Min is always getting into trouble with his best friend Tae-Su, they are often getting into gang fights. Tae-Su finds a job in the world of organized crime but Min declines saying his mother wishes he would get an education. After Min enrolled into a new school he befriended Hwan another trouble maker. One night at a local club Min gets auctioned off to a girl (Romy) to be slave for a night. He falls in love with Romy and continues to see her but she keeps the distance between them because she is concentrating on her education to get into college. As time goes by Tae-Su ends up in prison, Romy disappears, and Min and Hwan open a small restaurant. Tae-Su dreams of becoming a respected mob boss once he leaves prison, Romy is driven insane by an accident and gives up on her education, Hwan hopes to have a big restaurant someday and Min just keeps waiting for Romy to call him.

The film focuses on a branch leader position has opened up in Chicken's group and he is up against Barbarian to get it. The "Hung Hing" triad has to deal with finding a new successor to be the head of the Hung Hing group and they get the old boss' brother who resides in Thailand. Young and Dangerous 4 also brings in new characters in the "Hung Hing" group such as Ben Hon, Sister 13, and Prince.

Toshiaki Nagashima is a biologist who is doing major research on mitochondria. When his beautiful young wife is left brain-dead following a car accident, he secretly extracts mitochondria from her liver cells and begins culturing them in a desperate attempt to revive her. The mitochondria take on a life of their own and tries to spawn a new ultimate species that would eventually threaten to take over the world.

When his wife and son are brutally murdered by a fugitive drug lord that he helped put behind bars, former Special Ops agent Derek Leigh vows to avenge their deaths. After mastering lethal fighting skills at the hands of a martial arts instructor, he assumes the identity of The Jaguar - a vigilante superhero from his son's drawings - and with nothing more to lose, sets out on a fierce, one-man blood hunt to bring the criminals to final justice.

A stunt driver (Michael Madsen) heading for prison on a minor charge is freed against his will by a terrorist gang. Then by kidnapping his wife, he is forced to drive a getaway car in a plot to kidnap the President from a motorcade.

Leon, the 40-year-old former soldier who is an alcoholic now, gets a job as a bodyguard. His duty is to take care of one of the maffia leader's daughters. His problems begin when he falls in love with the 16-year-old girl.

When a man is murdered in Moscow, experimental bionic research brings him back to life. He then sets out to find his murderers and money that was stolen during the crime.