"Guard duty?" complains Gung-Ho. "I signed up with G.I.Joe to be a fighter, not a baby-sitter." But Gung-Ho's beef about protecting a scientist in charge of a top secret project is cut short by the blare of a frantic red alert. COBRA agent Zanzibar and his Dreadnok troops have infiltrated the high security think tand and have kidnapped Dr. Ehks. Now COBRA possesses the ultimate military advantage - Dr. Ehks's invention, and invisibility machine. And Gung-Ho will get his wish, along with G.I.Joe Team leader Hawk, the massive Roadblock, sneaky Sneak Peek, resourceful Tunnel Rat, quick-witted Lifeline, crafty Psyche-0ut, and the dynamite team of Law and Order. COBRA has launched a 24-hour bid for world domination and the G.I.Joe Team si the only hope to repel the onslaught. But they're up against Zanzibar, invisible Crimson Guard, fighter jets, gunships, choppers - even invisible ammo! How do you fight an invisible foe? Can the Joes find the answer in time?
This book is part of the G.I. Joe: A Real American Hero Books series and is book #2 in the series.