Well, Ultron isn’t a fan of his faux-sitcom world, and after 500 (!) episodes of “UltraVision,” Vision is no closer to persuading him to let the world survive. Even worse, Vision wasn’t able to halt all of the nanobots’ activity when he created this simulation, and some of the stragglers have taken over Paladin, Tommy, and Lisa in the real world. Even worse worse, Vision’s processing core is burning up with all the power he’s using to maintain “UltraVision,” and he’s almost out of energy entirely. But! As Vision and Ultron discuss the nuances of grief inside their simulation, Ultron realizes that Vision has used both of their cores to make this sitcom possible, and if Vision’s demise is imminent, Ultron’s is, too.
“Fine,” Ultron eventually says. “Fine.” In the real world, the nanoswarm’s self-destruct sequence is initiated, and the bots burn up and disappear as the “UltraVision” simulation is destroyed and Ultron disintegrates into a pile of data. Vision, though, is left unconscious on a table in the manor afterward, and the power emanating from Tommy’s hands isn’t enough to resurrect his dad. Fortunately, in a lovely family reunion, Billy arrives to quite literally offer a helping hand. (Hey, he figured out portals, after all!) He and Tommy use their joint magic to bring Vision back, and moments after realizing who Billy is, Vision pulls him in for an emotional group hug.
The next day, Tommy, Lisa, Paladin, and E.D.I.T.H. — well, the latter of whom only Paladin can see — board a private plane together, and Tommy puts on a set of augmented reality glasses that allow him to visit Vision in his mind palace. Vision knows that if it hadn’t been for Tommy, he never would have had reason to leave his own head, and he’s grateful that he can move out of the mind palace forever. Tommy wonders if it’s possible Wanda is out there somewhere, given that he, Billy, and Vision have all survived somehow.
“Well, we have said goodbye before,” Vision tells Tommy, echoing a “WandaVision” sentiment. “So I suppose it stands to reason we might say hello again.” But after Tommy signs off and Vision leaves his mental mansion, he’s brought back inside by the phone ringing, and he knows it’s Ultron calling. After all, a significant number of nanobots were unaccounted for after that ordeal at Horton Manor, but Vision didn’t want to come looking for Ultron. He believes in second chances; what will Ultron do with his?
Ultron jokes that it’s still 50-50 whether he’ll simply take in all the culture and wonder that the world has to offer, or annihilate its entire population. But whatever comes next for Ultron, he knows he doesn’t want to experience his future alone, and he has Vision to thank for that revelation. “Be good, Ultron,” Vision says, then he picks up his hat and coat and exits the mind palace permanently.
Hang on, there’s more! In a mid-credits scene, we get a little more insight into what Ultron meant about having a companion for his future. He regenerates inside Horton Manor, and we see he’s clutching a small device that’s labeled “Jocasta.” It’s not made clear what he plans to do with that recovered data… but the glint in his eye sure doesn’t look all that benevolent.
