Dr. X orchestrates the explosion of a plane to steal a nuclear warhead. With a nuclear battleship about to fall in Dr. X's hands, Action Man makes haste to recover the warhead, aided by his team and Dr. X's former lackey Ursula.

Live action mission: Cut off Dr X's fuel supply in the North Sea. Team mate on radio: Action 2 (Knuck).

Action Man's end-of-episode lesson: Making mistakes.

Action Man helps Knuck investigate his nephew Tom who has been involved in Gangrene's X-Vitamin steroid tests. Action Man tricks Dr. X into destroying Gangrene's lab and prevents him from putting the X-Vitamin into the city's water supply.

Live action mission: Disrupt blockage in Lake Ontario, Canada. Team mate on radio: Action 3 (Natalie).

Action Man's end-of-episode lesson: Drugs.