The Avengers discover a strange energy reading coming from a video game Spider-Man and Giant-Girl are playing and decide to investigate a Renaissance Fair that appears to be the source of the signal. There, they encounter Morgan le Fay. Iron Man and Captain America must defeat Morgan's champion while Wolverine and Bruce Banner try to stop the signal broadcast and free those held captive by the evil enchantress.

"Remember your history--the Avengers didn't thaw out Captain America, and Kang the Conqueror became Master of the World throughout all time. To make a brighter future, our heroes have to go to the 1950's and enlist the help of The Agents of Atlas!"--from publisher's website.

Giant-Girl seems to switch sides when the Avengers battle a subterranean race called the Insectoid people.

The Avengers are recruited by the evil Serpent Society, which uses snake venom to control its inductees.

A planet-sized entity that has achieved consciousness will devastate Earth unless the Avengers can stop it.