After incidents in New York, Massachusetts, England, and elsewhere, the chaos emerges in Superhero City, a place that was already a cesspool of villainy and devious plots in its own right, mostly thanks to the neighboring Villain City. In this plan, Doctor Doom tried to get a hold of the powerful Infinity Sword, which would allow him to rule not only the city, but potentially the whole universe. Now Iron Man has to stop doom from reaching the fragments of the sword, with the aid of the various other heroes.
