Lyon Gaultier is a deserter in the Foreign Legion arriving in the USA entirely hard up. He finds his brother between life and death and his sister-in-law without the money needed to heal her husband and to maintain her child. To earn the money needed, Gaultier decides to take part in some very dangerous clandestine fights.
Ray Tango and Gabriel Cash are narcotics detectives who, while both being extremely successful, can't stand each other. Crime Lord Yves Perret, furious at the loss of income that Tango and Cash have caused him, frames the two for murder. Caught with the murder weapon on the scene of the crime, the two have no alibi. Thrown into prison with most of the criminals they helped convict, it appears that they are going to have to trust each other if they are to clear their names and catch the evil Perret.
This time China O'Brien has trouble with a dealer who puts a prize on her head because she had spoiled an important drug deal of his. But all the world's criminals will not be enough to catch up with China O'Brian, one of the masters of the martial arts.
Kahn is a heavy weight kick-box champion, who often kills his opponents in front of the running camera, to sell it on video tape. Jake had to witness once how his brother was killed by him, and now has come for revenge. But first he has to improve his fighting skills; he asks Phang, the only person in the whole world who ever had Khan down on his back, to train him until he is a match for him.
When someone tries to murder watchmaker Eddy Kay, the incident triggers a barrage of nightmares and flashbacks into a past that isn't his own. Fearing for his sanity, Eddy contacts psychiatrist Dr. Anna Nolmar for help. Anna thinks he's hallucinating until another attack proves the dangers are all too real. The two of them go on the run, trying to discover the truth about Eddie's past and true identity before it kills them.
When the girl that detective Joe Hallenback is protecting gets murdered, the boyfriend of the murdered girl attempts to investigate and solve the case. What they discover is that there is deep seated corruption going on between a crooked politician and the owner of a pro football team.