THE DEATH-TRAP OF DOCTOR DOOM!

Following the public announcement of the Avengers' formation, the world reacts with fascination and uncertainty. A televised news report reveals that Ant-Man, the Wasp, Iron Man, the Hulk, and Thor have formally established themselves as a team dedicated to protecting Earth from threats beyond the capabilities of conventional authorities. Citizens across the country discuss the unprecedented alliance, with some celebrating the gathering of such powerful heroes while others express concern over the inclusion of the unpredictable Hulk. Even the Fantastic Four take notice from their headquarters in the Baxter Building. Reed Richards welcomes the Avengers as potential allies, though Ben Grimm remains skeptical of the Hulk's sudden acceptance as a hero. Elsewhere in New York, Spider-Man hears the news and briefly wonders whether the newly formed team might have been a better fit for him than the Fantastic Four.

Not everyone is pleased by the emergence of another superhero team. Hidden within his secret stronghold, the brilliant and tyrannical Doctor Doom watches the announcement with growing anger. Having already crossed paths with numerous heroes, including the Fantastic Four, Ant-Man, and Spider-Man, Doom views the Avengers as another obstacle to his ambitions of conquest. Determined to eliminate them before they become a serious threat, he begins formulating a plan designed specifically to exploit the weaknesses of a team that has barely begun working together.

Thirty-six hours later, the Avengers gather at Tony Stark's luxurious Manhattan mansion, which has been designated as their headquarters. The heroes attempt to settle into their new arrangement, but tensions are already evident. Thor and Hulk exchange insults, the Wasp openly pines for Iron Man’s benefactor Tony Stark, and Ant-Man tries unsuccessfully to maintain order. Their meeting is interrupted by Major Bowman of the National Security Council, who arrives bearing urgent information about Doctor Doom. Bowman explains that Doom's criminal history includes numerous acts of international terrorism and recounts how the villain's massive Flying Fortress was seized and impounded after a previous confrontation with the Fantastic Four.

As Bowman briefs the team, alarming news arrives. Doom's supposedly abandoned Flying Fortress has somehow reactivated itself and escaped from military custody. Convinced that Doom is involved, the Avengers immediately mobilize. A high-performance military jet-copter is dispatched to transport them toward the gigantic vessel, which is now flying over the Atlantic Ocean. During the pursuit, the heroes finally witness the fortress for themselves. Stretching nearly a thousand feet in length, the massive airborne structure dwarfs anything they have ever encountered. Before they can formulate a plan, an invisible tractor beam locks onto their aircraft and drags them directly toward the fortress.

Once aboard, the Avengers split up to search for Doom. This proves to be exactly what the villain intended. The Hulk stumbles into a frictionless chamber lined with Teflon-like surfaces and powerful air jets that leave him helplessly spinning. Thor is assaulted by swarms of advanced energy spheres designed to overwhelm even his godly strength. Iron Man encounters what appears to be Doctor Doom, only to discover too late that it is a trap involving a robot that drains the energy from his armor. Ant-Man finds Major Bowman apparently imprisoned within the fortress, but strange inconsistencies soon begin to emerge.

The truth is finally revealed when Doom appears on a series of video screens. The Major who brought the Avengers together was actually Doctor Doom in disguise. The real Bowman had been captured hours earlier. By impersonating the government official, Doom successfully lured the entire team into his fortress and separated them. Gloating over his success, Doom explains that he has defeated each Avenger individually through the ancient strategy of divide and conquer. He boasts that the world will soon witness the destruction of its newest heroes before he turns his attention toward conquering the Fantastic Four and eventually the entire planet.

However, Doom underestimates the adaptability of his enemies. Trapped in a sealed chamber filling with gas, Ant-Man unveils a new identity. Using an enhanced growth formula, he transforms into the towering Giant-Man. His increased size allows him to break free from the trap and rescue the real Major Bowman. Giant-Man quickly begins locating his teammates. He frees the Hulk from his spinning prison, while Thor discovers that Mjolnir's mystical powers allow him to escape Doom's dimensional energy spheres. Together, they locate the nearly powerless Iron Man and destroy the robot draining his life-supporting energy. Thor then channels lightning directly into Iron Man's armor, restoring his strength.

The reunited Avengers launch a coordinated assault on Doom's command center. There they discover the Wasp imprisoned inside a transparent containment globe. Thor smashes her prison with his hammer, and the team finally confronts Doom directly. Although Doom's advanced force fields allow him to briefly hold his own against the heroes, he ultimately retreats through a hidden escape route. The Hulk pursues him and seemingly catches him, only to tear apart what turns out to be another Doombot. The real Doctor Doom has already vanished, leaving the heroes to deal with one final crisis.

Realizing his plan has failed, Doom activates the fortress's self-destruct sequence. The gigantic vessel begins to tear itself apart as explosions ripple through its interior. With only moments remaining, the Avengers desperately search for a way out. An argument erupts over a small escape pod capable of carrying only a single passenger. Refusing to waste time, Hulk throws Major Bowman into the pod and launches him to safety. Working together, the Avengers create their own escape route by smashing through the fortress's hull. Thor carries the shrunken Ant-Man and Wasp while the others leap clear of the doomed craft. Seconds later, Doctor Doom's magnificent Flying Fortress erupts into a massive fireball and crashes into the Atlantic Ocean.

Safely ashore, the Avengers reflect on their victory. They realize that Doom nearly defeated them because they were inexperienced as a team and too easily separated. Nevertheless, by combining their unique strengths, they overcame every obstacle he placed before them. Giant-Man credits the Wasp for secretly helping coordinate the rescue effort, while the others acknowledge the contributions of every member. Though frustrated that Doctor Doom escaped yet again, the heroes recognize that they have passed their first true test as a team. Unknown to them, the real Doom watches from afar. Despite losing his fortress, he has gained something valuable: a measure of respect for the Avengers. As he plots future schemes, the world's newest super-team emerges stronger, more united, and more determined than ever before.