When a professional group of thieves steal a batch of thermonuclear detonators, which can cause mass destruction if they fall into the wrong hands, Archangel has reason to suspect that the robbery was an inside job, and sends Hawke and Santini to use Airwolf to track down the detonators before they can be used by the criminals. Meanwhile, while Hawke and Dom are busy tracking down the detonators, a man arrives at Santini Air asking Caitlin to give him flying lessons, and soon strikes up a romance with her – but unbeknown to her, he is actually an ex-F.I.R.M. employee who was the inside man on the robbery, and now plans to use her in a trap to get his hands on Airwolf, which he intends to use to fly the detonators out of the country with...

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...