The most powerful object in the universe, the Infinity Sword, has been shattered in a battle between Iron Man and Dr. Doom. But Doom doesn't give up easily, he'll leave no stone unturned until he recovers every last shard.

Iron Man snags the best heroes around to beat Doom at his own game: Wolverine, Hulk, Thor, Silver Surfer and The Falcon. The fact that these big guns are also loose cannons who may not play well together is not the sort of thing that occurs to Iron Man. Nor does he see any problem in cramming a grouchy loner, a gamma-green tantrum machine, a bombastic thunder god, a naIve alien and a prank-pulling speedster on their flying Helicarrier headquarters. But with friends like Captain America and Ms. Marvel and tons of other heroes helping out, Iron Man proves he can lead the Super Hero Squad to victory!