Lt. Singh arrives to escort the Quest team to the Quetong Police, where Commissioner Wa asks Dr. Quest to investigate why fish have been dying and policemen disappearing in Swamp Lake. After narrowly foiling an assassination attempt, it is discovered that Singh is an enemy who has kidnapped the boys and taken them to the secret missile base of General Fong. Benton and Race infiltrate the base to over-power Fong and his minions, rescuing Jonny and Hadji. Dr. Quest destroys the missile, but the enemy revives, forcing the Quest team to flee. And they must escape through a gauntlet of deadly sentries!