In this universe, Hank Pym’s Ant-Man and the Wasp journey to the Quantum Realm to retrieve his long-lost wife Janet went badly wrong when he found her infected by a quantum zombie brain virus upon his arrival. When she returned, Janet started gnawing on everything within reach and the virus spread like wildfire, quickly infecting millions. Cap, Widow, Hawkeye, Iron Man and Black Panther apparently set out with arguably the worst Cap plan ever to turn back the tide, and disappeared under a pile of hungry zombies.
Banner finds himself among the last of the still-human holdouts. Bucky Barnes, Okoye and Sharon Carter are tracking a signal from Camp Lehigh that may or may not provide a solution to the zombie problem. Along with Happy Hogan and Kurt (who I still don’t think has a last name), the gang forge a loose, Train to Busan-y mission to try and reach Camp Lehigh.
Unfortunately, they are attacked by numerous familiar faces before they set out, and Happy is turned into a zombie, further dampening Peter’s hopes for a W. They eventually get aboard a train, but Zombie Cap climbs on and Bucky has to fight him, which leads to a small sliver of time with Bucky as Cap when he nabs his shield.
Hope gets infected, but helps the rest of the gang get to Camp Lehigh, where they find Vision experimenting with the Mind Stone, and Scott and T’Challa still alive (to varying degrees). Okoye realizes they can use Vision’s research to cure the zombie population, but only from Wakanda where the tech they need could be easily constructed.
Vision’s base turns out to be a bit of a trap. He’s been luring people there to feed a contained – and admittedly extremely cool-looking – Zombie Wanda, as he couldn’t bear to lose her (gulp). His guilt gets the better of him when his friends are attacked by Wanda, and T’Challa, Peter and Scott Lang’s head escape Camp Lehigh and fly to Wakanda while Banner Hulks out and attacks the hoard.
How does it work out?
Oof, not good. Earth seems utterly screwed. Scott is still a head in a jar being supportively cuddled by The Cloak of Levitation, T’Challa is missing a leg, Peter is clinging on to his last shred of hope, and the safe haven of Wakanda plays host to an Infinity Gauntlet-wielding zombie Thanos. Yikes.