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.
Glendon Wasey is a fortune hunter looking for a fast track out of China. Gloria Tatlock is a missionary nurse seeking the curing powers of opium for her patients. Fate sets them on a hectic, exotic, and even romantic quest for stolen drugs. But they are up against every thug and smuggler in Shangai.
After thief Alex Cardo gets caught while stealing an ancient katana in East Asia, he soon finds himself imprisoned and beaten up by the crowd there. One of the guards, Demon, feels upset by Alex appearance and tortures him as often as he gets the opportunity. Alex finds a friend and mentor in the jailhouse, Master Sun, who teaches him a superior fighting style called Iron Hand. When a 'best of the best kumite' is to take place, Demon gets an invitation. Now Master Sun and Alex need to find a way to let Alex take part in the kumite too.
An American with a Japanese upbringing, Chris Kenner is a police officer assigned to the Little Tokyo section of Los Angeles. Kenner is partnered with Johnny Murata, a Japanese-American who isn't in touch with his roots. Despite their differences, both men excel at martial arts, and utilize their formidable skills when they go up against Yoshida, a vicious yakuza drug dealer with ties to Kenner's past.