Following the events of Age of Ultron, the collective governments of the world pass an act designed to regulate all superhuman activity. This polarizes opinion amongst the Avengers, causing two factions to side with Iron Man or Captain America, which causes an epic battle between former allies.
While on detention, a group of misfits and slackers have to write a letter to the President explaining what is wrong with the education system. There is only one problem, the President loves it! Hence, the group must travel to Washington to meet the Main Man.