In the end, the trio together brought Loki back to the Sky Mothership. There, Thor reveals Loki's purpose in robbing the Cosmic Cube, which he originally wants to use to open the portal and summon the Chitauri army to rule Earth. Tony then uses his knowledge of thermonuclear astrophysics to explain Loki's plan and tells everyone that S.H.I.E.L.D. is using the Space Cube to create weapons, which is one of the reasons for the invasion of Hydra.
Tony asked Banner when he became an expert in thermonuclear astrophysics, and Banner said he had always been an expert in the field, but had been studying gamma rays before, and the Hulk was the product of gamma rays. Subsequently, Tony and Banner began working on Loki's scepter in the lab. At this time, Team America also came to the lab, and Tony told him that Nick Fury was hiding something. Team America mocks Stark Building for being unsightly, and Tony satirizes Team America's uniform.
Soon, Tony discovered that S.H.I.E.L.D. was using the Space Cube to make weapons by cracking the S.H.I.E.L.D. system, which is why Thor and others arrived some time ago and destroyed a small town. Tony and Team America began to suspect Nick Fury's motives.
In the lab, Banner turns into the Hulk due to emotional runaway and causes massive destruction. However, he did not realize that he had fallen under the mothership. Thor is also put in a glass prison by Loki and taken away by the control Hawkeye. Most tragically, Coulson was killed by the escaped Loki.
Tony is saddened to learn the news, and realizes that Loki's next plan is to open the portal in his Stark building and summon the Chitauri army. So, he immediately repaired his armor and rushed there.
Upon arriving at the Stark Building, Professor Eric, who was in control, was opening the portal. Tony tried to destroy the device, but was unable to break the energy shield because the Mark Six was badly damaged. So he came to the platform, took off the Mark VI, and planned to put on the Mark 7 that had not yet been tested.
However, Loki is also here, and Tony has to risk talking to him. Tony's armored bracelet fell in the bar, so he pretended to ask Loki if he drank and managed to get the bracelet.
Loki then tries unsuccessfully to control Tony with his scepter. It turned out that Tony's arc reactor blocked the energy of the scepter, which made Loki very angry, he threw Tony out the window, and Tony immediately activated Mark Seven.
The Mark VII has all the features of the previous Warframes, such as the portability of the Mark V, the laser of the Mark VI, and Tony has also added a thruster to the back of the Mark VII. He matches the armor through the bracelet, successfully canons Mark VII, and successfully blocks Loki's plans.