Kwai Chang Caine (DAVID CARRADINE), stricken by poisoned water, lies near death in the home of a former slave who fearfully harbors a secret so precious that it might well save the entire community from disaster.
When a man kills the son of a wanted criminal he gets praised for it. He is then implored to go after the criminal. And he gets so determined that he shoots the wrong man. In the meantime when the criminal hears about his son's death he sets out to get the one who killed his son.
Caine (DAVID CARRADINE), in a reversal of roles, finds himself as the master with a 15-year-old boy (DON JOHNSON) as his disciple in which he must teach him that the act of revenge can lead to the death of the spirit.
Caine befriends a group of Hutterites who are God-fearing and simple people yet fear contamination from outsiders. They are involved in a dispute over a nearby waterhole with cattlemen who fear that their sheep may infect the water.
Caine (DAVID CARRADINE) sees dramatized that every man is three things -- what he thinks he is, what others think he is, and what he really is -- when some of the people in a small town (HOWARD DUFF, JOHN DREW BARRYMORE, RUTH ROMAN, TINA LOUISE) are confronted by the death of one of their leading citizens.
Caine is involved in separate adventures in two interweaving story lines: he helps a mad mountain man save his dying wife, and -- in a flashback to China --- battles a warlord to win a concubine's heart.
Caine (DAVID CARRADINE) resolves his adventures with a mad mountain man (STEFAN GIERASCH), and -- in a flashback to China -- a marathon kung fu battle with a warlord (STEFAN GIERASCH) to win a concubine's (NANCY KWAN) heart.