The American public can be so unforgiving. Poor Tony Stark just had one little alien Secret Invasion happen on his watch as SHIELD's director, and he gets fired. Then Norman Osborn takes over as head of keeping the super humans in line because you might as well put a 'reformed' super villain in charge. It worked so well with Dick Cheney after all. 
 So Tony is out of SHIELD, his company is imploding thanks to the failures of Stark tech due to a computer virus during the invasion, and half the superheroes hate him for his role in Marvel's Civil War. Things get worse when Tony plants his own computer virus into the network to keep Osborn from getting his hands on more of the Iron Man tech and the super human registry database. Osborn immediately frames Stark and his former SHIELD deputy director Maria Hill as traitors who collaborated during the invasion and Tony has to go underground. 
 Unfortunately, the last copy of the critical data was uploaded into Stark's brain as part of the Extremis program that had linked him to the previous version of the armor. To make sure that Osborn doesn't get his hands on the info, Stark initiates a program that will eventually wipe his mind and then tries to destroy hidden stockpiles of Iron Man armor. Osborn isn't content with just setting the world's police forces after Tony, he also puts a bounty on his head with the super baddie community, too. On the run and forced to use older versions of his armor as his intellect starts to degrade, Stark has to face a variety of threats from War Machine to Namor. But he also managed to leave a very special severance package for Pepper Potts. 
 This is another great set of Iron Man stories and it was an interesting twist to put Tony, who had been acting as America's Official Barney Bad-Ass when it came to chasing unregistered superheroes after the Civil War, into the role of fugitive who is trying to protect the secrets the registered super humans entrusted him with. Things might be a shade confusing for those who didn't know what was going on in the Marvel universe at the time, but it's not too hard to figure out what's happening.