After dealing with A.I.M.'s Scientist Supreme, the Avengers are shocked when Ultron returns after his apparent demise and absorbs A.I.M.'s Super-Adaptoid technology and the unknown space metal used to make the Adaptoids. The Avengers are forced to cancel their expansion plans and Ant-Man leaves the team due to a lack of global threats. The Squadron Supreme is imprisoned in a special section of the Vault. The rest of the Avengers stop Hyperion from blowing up the Earth. Nighthawk tries to flee to find another planet. He tries blowing up the planet by having Hyperion absorb Nuke's powers and destroy the planet's core. After going into hiding, the Avengers manage to defeat the Squadron Supreme by waiting until the Squadron Supreme's members divide rule of the planet's continents, then they pull a surprise attack and trap each member of the Squadron Supreme one by one. This leads up to the restoration of the Squadron Supreme's sixth member named Nuke. Their plan is put into motion, where they do different plots in their battle with the Avengers. The Squadron Supreme has plans to become the superheroes of Earth and save the world their way. Thought to have perished when their old planet blew up, they come to Earth in an attempt to conquer it with Hyperion re-joining their team when he hears of their survival. While Hyperion served as the 'Hammer' for the Squadron Supreme, Nighthawk served as the 'Architect' of the team.

There is also a subplot detailing the arrival of the Squadron Supreme, Hyperion's old team which also consists of Nighthawk, Power Princess, Doctor Spectrum, and Speed Demon.

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