Civil War, Part 4: Avengers Revolution.
Ultron attacks New York and the all the Avengers (new and old) go to stop him. Ultron uses all the Inhumans to attack the humans of Earth so that only he and his robot army will be left. The Avengers go to regroup at Dr. Strange's Sanctum Sanctourm. Ant-Man and Iron Man have a way to disable the registration disks and some of the other Avengers go to fight Ultron and the others go with Iron Man and Ant-Man. Ant-Man and Iron Man are quickly working on a solution, but not before they are found by the Inhumans. They send the others to fight them while they work. Iron Man and Ant-Man find a solution and test it on Inferno, and it works. Everything seems to be going good until Ultron orders his sentries to destroy all life on Earth. Ultron than transfers his consciousnesses into a vibranium body in Wakanda. The Avengers attack Ultron and fail to stop him. Ultron then goes to destroy humans when the Avengers go to battle him. They then crash the Avenjet into Ultron. Vision then reverses the ray Ultron was going to use to destroy the humans and it hits Ultron. Ultron then moves over his consciousnesses to Iron Man's Armor and his mind. Just as the Avengers are about to destroy Ultron and Tony, Dr. Strange shows up and creates a dimension where Ultron won't be able to come back. Tony and the original Avengers go into the dimension and Dr. Strange saves Tony. But he has to stay in the dimension so Ultron can't leave. The Avengers go back to Earth and leave Tony, but Falcon links the communication system to be inter-dimensional so that they can communicate with Tony.