The storyline is a complicated, multi-layered crossover regarding the return of the seven-headed Elder God Set the Old Serpent at the hands of the various underwater empires of the Marvel Universe.

The title is misleading, however, as Atlantis and its then-leader Attuma only play minor roles in the story as flunkies for the real masterminds: the Lemurians and their leader Llyra.

Atlantis Attacks continued and expanded the format created by 1988's The Evolutionary War crossover storyline, in which all of Marvel's superhero annuals were tied into one story.

Every annual also contained a back-up story called "The Serpent Crown Saga", written by Peter Sanderson with pencil art by Mark Bagley.

2) #25 (May 1991), by Jim Valentino and Rik Levins, explored the question "What if the Marvel Super Heroes had lost Atlantis Attacks?"

In the story, only a handful of Earth's heroes (as well as villains Doctor Doom and Sabretooth) have avoided being turned into serpent men.

The Silver Surfer gives the Eye to the Watcher for safe keeping, as Set's children are born; they then consume their brainwashed mothers and countless mindless serpent men and women before leaving to terrorize alternate universes.

30 years after the crossover storyline, the title was revisited as a five-issue limited series, written by Greg Pak with art by Ario Andito.

Upon arrival, Wave is warmly greeted by Namor due to her recent role in defeating the Sirenas, longtime enemies of Atlantis.

While the rest of the Atlas agents prepare themselves for another attack from Namor, Nguyen reveals that he's also recruited the Sirenas to help defend Pan from Atlantis.

After Namora and Carina of the Sirenas recount their people's history, the group finds itself torn between protecting Pan, attacking or defending Atlantis.

As fighting each other openly would raze the planet, dragons have used humans as proxies in their own personal conflicts against each other, making them responsible for almost every major war in history.

As Namor returns to Atlantis with Namora, Venus and Aero, the rest of the Agents uncover Nguyen in his personal bunker and confront him.

As the Hulk pummels Namor, Sword Master distracts him long enough for Shang-Chi to remove the device, freeing Amadeus from Nguyen's control and reverting him back to Brawn.

As Mr. Lao laments losing Amadeus as a potential leader, he and Woo plan their next move: helping Namor fight the King in Black.