Stark Tower.

In front of the big screen that connects each of the Ultron robots to monitor Ultron's steel fortress, Natasha, Hawkeye and Captain America are very bored sitting on the comfortable sofa, chatting about the topic, while leisurely enjoying the various snacks and drinks provided by Stark.

The three of them chatted about their past lives, and Captain America said nostalgically that he had been bullied before he became Mr. Bodybuilder, but he was born with the spirit of resistance and did not really let the other party hit him once, and the reason why he chose a shield as a weapon was just because he took a trash can lid as a shield to protect himself because he resisted bullying once, and then, he chose the star shield made of Zhenjin to protect himself, and also to protect the people.

After paying his respects, Hawkeye talks about Natasha's affair again, which livens up the atmosphere, but it provokes Natasha to shout amid the laughter of Captain America.

"Hey, hey! Clint! Don't always talk about me, you've made mistakes. Right! It was in India that you didn't hit a single arrow in the face of the bald wizard who killed the civilians, but thankfully my widow stung him down. Natasha objected.

"Hey! That was originally the goal of your mission, and I assisted you, not to mention that guy was a mage, and the golden light released directly distorted my arrows, even if I shot accurately, it was impossible to shoot him. Hawkeye shouted disappreciately, apparently thinking of the evil mage who had ruined his name as a marksman.

"Alas! Do you remember? Natasara raised her voice, squeezing her eyebrows at him.

Hawkeye rolled her eyes when she heard this, and turned her head away, there was nothing she could do about this caring woman.

Captain America smiled lightly on the corner of his mouth, enjoying this relaxed and pleasant day very much.

Their job was originally to monitor Ultron to build the steel fortress, and the task was naturally very important, but even so, their patience was slowly worn out in this long day, even if Captain America was so serious, he couldn't guarantee that he would not be irritated when he put his eyes on the surveillance screen, not to mention that Ultron regained his calm again after the abnormal situation a few days ago, and just concentrated on building the materials for the steel fortress.

It's just that when the brother-in-law was chatting, the picture on the big screen of the surveillance suddenly seemed to be affected, and it shook a little, only a slight change, and then returned to its original state, in which the Ultron robot was still building the formation of the steel fortress in an orderly and non-stop manner, as if nothing had changed.

Natasha seemed to feel something, and subconsciously glanced back at the screen, but the picture on the screen continued as always, without any problems. She pursed her lips to herself, laughing at her not-so-womanly instincts, and continued to join in the small talk.

But just about half an hour later, a burst of angry voices directly broke the harmony between the three of them, and brought bad news with it.

"What are you three doing?!" Tony Stark, dressed in a steel suit, broke the glass and rushed in from outside the building, shouting angrily.

The sudden appearance of Tony Stark and his anger made all three of them stunned.

"What happened?" Captain America immediately got up and asked, facing such Tony Stark, he couldn't help but have a bad premonition in his heart.

Tony Stark glanced at the surveillance change, sighed, and then raised his hand to smash it to pieces.

"What the hell is going on? Stark. Hawkeye asked.

"Just half an hour ago, Ultron deceived Jarvis and had already started the plan of the Iron Fortress in advance, alas! Forget it, you'll know right away. Tony Stark was a little anxious, but it had come to an end, and it wasn't the three of them who were the reason for it.

The four of them walked out, and at the same time, Jarvis had already completed the simulation of the blueprint for the launch of the steel fortress.

"Look." Standing on the street, Tony Stark just pointed to the sky and began to look at Jarvis's work.

The three of them didn't know what was going on, so they looked up.

Originally, they couldn't see the sky inside the building, but now that they came out, they finally realized that the sky had changed.

"It's ...... Iron Fortress? Natasha stared at her beautiful emerald eyes and said dumbfoundedly.

I saw that the sky over this city, which was originally shrouded in industrial smoke, had been shrouded in another layer at some point, and the steel fortress was not really made of steel as its name suggested, steel was only the point of connection, and the fortress was connected by energy shields.

The entire sky is shrouded in a layer of blue energy visible to the naked eye, and in the vision of the eagle eye, this protective shield is spliced by hundreds of slightly arched regular hexagonal energy, and above those connected points, it is the steel fortress components built by Ultron, which is the energy of the steel fortress molding, each of which is the cornerstone of providing energy.

"Ultron built the Iron Fortress?" Hawkeye asked, puzzled.

"No, there isn't." Tony Stark had just finished reading the blueprint of the connection of the steel fortress components launched by Ultron, and determined the launch location of the fortress components on the ground according to the original design drawings. Ultron didn't finish building the Iron Fortress at all! ”

"It's a half-finished product! How did I forget this! Tony Stark shouted in shock, and then it dawned on him that Ultron never needed to completely build the plan of the steel fortress, the fortress was used for protection, but when the fortress fell into the hands of Ultron, it was only for destruction, and destruction did not require a complete steel fortress at all.

If half of the earth is destroyed, will the remaining half still be able to exist?!

"We must organize Ultron and take control of the fortress." Tony Stark looked at the three of them and said anxiously: "You immediately gather people, according to the coordinates I sent you, to intercept the components on the ground that have not yet been launched, as for the ones that are sent to the sky and spliced together, don't care, damn!" Now it's a problem! ”

He glanced up at the fortress energy wall that nearly covered a third of the earth, and swallowed. The energy wall is completely formed by the energy provided by the Ark reactor, and normal means can't break it at all, even if he uses his clever brain, there is no way to do it at present, but if the energy wall gets out of control, although the effect can not be without the effect of the entire fortress out of control, it will definitely bring a big crisis to the surface of the earth, and now that the matter has come to this, he can only try his best to make up for his 'stupidity'.

Looking at Iron Man in the distance, Steve Rogers had a confused look in his eyes and muttered in his mouth.

"How...... How did it get to this? (To be continued.) )