In recognition for their record of outstanding accomplishments, the brave crime-fighters--Captain America, Spider-Man, Iron Man, Wolverine, Hulk, and Ms. Marvel--are on their way to the Buckingham Palace to receive awards from Her Majesty the Queen Elizabeth II. Instead, a stealthy mega-villain from the past emerges, and through his invincible battle-robot, he starts to wreak havoc. Now, it is up to the mighty defenders to stop the evil megalomaniac with a grudge. Can Marvel's super-heroes save London?