The Avengers reunite when Captain America and Iron Man learn to appreciate their differences while trying to save the world from ultimate destruction at the hands of Ultron who uses a special nano-virus to turn Falcon into a carrier to convert all humans into Ultron Sentinels. As Ant-Man works on a cure for the nano-virus after Falcon is detained, Captain America and Iron Man go after Ultron while the others attempts to slow down the infection. In the end, before Ant-Man's cure gives Falcon enough freewill to install a program to restore all converted humans, Iron Man manages to trick Ultron into the following him into the Astro Carrier while setting its course for the sun. Though Ultron attempts to escape the suicidal death trap while converting Iron Man, Arsenal overrides Ultron long enough to blast off to the sun while Iron Man is retrieved by Thor. With the Avengers reunited, Captain America and Iron Man invite Ant-Man to their team.