A mysterious preacher protects a humble prospector village from a greedy mining company trying to encroach on their land.
Los Angeles, California. Officer Murphy, a veteran Metropolitan Police helicopter pilot suffering from severe trauma due to his harsh experiences during the Vietnam War, and Lymangood, his resourceful new partner, are tasked with testing an advanced and heavily armed experimental chopper known as Blue Thunder.
After fierce war chief Ulzana and a small war party jump the reservation bent on murder and terror, an inexperienced young lieutenant is assigned to track him down.
