Inside the Taa II, worldship of Galactus, the Cosmically Powered Korvac demands an answer to the ultimatum he put to Captain America: join him in his plan to destroy humanity, or die. Cap responds that he doesn’t deal with monsters. His shield barely manages to protect him from the enemy’s first energy blast. Cap engages Korvac to buy time for Nikki and Firelord to recover their strength, dodging his foe’s blasts with his shield and agility to break through into the room containing the Ultimate Nullifier. Galactus appears before him and demands an explanation for this intrusion. When Cap mentions that he has come for the Ultimate Nullifier, the god-like being hurls him into the abyss as he does with all mortals who come seeking that powerful device; Cap catches the edge of the pit and pleads for a hearing, insisting his intentions are noble. Galactus grants him the weapon but warns him that "there is no power gained without an equal price." Cap takes the Ultimate Nullifier and confronts Korvac but can’t bring himself to kill the enemy with it. Korvac seizes on his moment of hesitation and overpowers him, taking the weapon for himself. When the cyborg villain uses it, however, he is vaporized, consumed by the power he was not sufficiently dedicated to wield. Galactus reveals that Korvac’s energy has been scattered throughout the cosmos, never to return. Nikki praises Cap for his trick in getting Korvac to destroy himself; Cap explains there was no trick: he didn’t feel right using the Ultimate Nullifier against anyone, no matter how evil. When the Guardians reveal that there is no way to return Cap to the 21st century. He is returned in an instant to join his Avengers teammates in mopping up Korvac’s empowered henchmen. The Guardians confiscate the futuristic weaponry and return to their own time and Cap realizes this world is his home now.