When a scientists daughter is kidnapped, American Ninja, attempts to find her, but this time he teams up with a youngster he has trained in the ways of the ninja.
Mayoral candidate Dr. Rachel Larkin has a dangerous plan for swift justice in the form of a band of ex-convicts, called the Peacemakers, who roam the streets to do her bidding. When a boxer friend is killed by Larkin's thugs, an outlaw cop goes undercover to get evidence, and works his way up to the inner circle of the doctor's army.
Rookie cop Sam Staziak has a unique gift: he is a Scanner, which gives him the power to read the thoughts of others, and also to inflict great bodily harm. When a mad scientist begins using mind control to murder police officers, Sam realizes that only he and his unique gift can put an end to the mayhem.
