When ""The Mongoose"", a new laser weapon, is stolen, the thieves fall out, and one of them contacts The F.I.R.M. with hope of returning the weapon for reward. Archangel sends Hawke, with Dominic and Caitlin, to work undercover as stunt men at a travelling Wild West show where the man is hiding out, but when their contact is killed in a suspicious ""accident"", it's up to them to find out the whereabouts of the weapon for themselves before the thieves can sell it to foreign agents...

At the funeral of a Vietnam comrade, Hawke takes it upon himself to deliver the man's coffin flag and Congressional Medal of Honour to the soldier's brother, Billy Fargo. But arriving in the small rural town where Fargo is reported to be living, he finds the whole area inhabited solely by youths, all under their ""father"" Fargo's influence. Fargo emerges to be a deranged ""peace-loving"" hippie, who, with his wily cohort Sabrina, is planning to use the youngsters to help in a plot to make a destructive anti-nuclear statement to the world...