The Soviets have developed a revolutionary new jet fighter, called "Firefox". Naturally, the British are worried that the jet will be used as a first-strike weapon, as rumours say that the jet is indetectable on radar. They send ex-Vietnam War pilot Mitchell Gant on a covert mission into the Soviet Union to steal Firefox.
When a young rape victim takes justice into her own hands and becomes a serial killer, it's up to Dirty Harry Callahan, on suspension from the SFPD, to bring her to justice.
Dirty Harry Callahan returns for his final film adventure. Together with his partner Al Quan, he must investigate the systematic murder of actors and musicians. By the time Harry learns that the murders are a part of a sick game to predict the deaths of celebrities before they happen, it may be too late...