The Avengers are the greatest heroes in the world but their "power" on the planet is the envy of them. Nick Fury therefore has the Thunderbolts unofficially trained to face them in case they go bad. But, in the shadows, Ultron organizes a plot to force his teams to fight each other so they can operate freely. However, Doctor Strange, who was looking for an old adversary, will find himself in the middle of the battlefield, but his powers that can take others to the mirror world could save the day.
