Synopsis
In the year 3193 Immortus stands ready to send his Infinity Watch to help the Avengers in the present, while the world and time crumbles around them.
In Avengers Tower today Bruce Banner, Dr Doom, Hank Pym, Tony Stark and Vision work together to try to find a way to stop the Celestial Exitar the Executioner from destroying the Earth. Wasp contacts them and explains that the Apocalypse Twins have framed humanity for the deaths of some Celestials. They used Thor's axe Jarnbjorn to do it. Thor's gone to get the axe back. Meanwhile Jan's mission is to destroy the Tachyon Dam that prevents time-travel at this point, so that Immortus can interfere.
Meanwhile Dr Strange leads a bunch of heroes to fight Exitar.
Captain America is captive of the Twins. Eimin and Uriel gloat over how their plan has come to fruition. They claim to have destroyed every possible future for the Earth (which is why Immortus' time is dissolving, as did Kang's in #12 and several others in #14). Humanity is doomed, but they've already evacuated all mutants last issue. They're especially glad that their cruel foster-father Kang's future empire will vanish.
Their reverie is interrupted by Thor smashing through a wall of their spaceship. Eimin hurriedly hits a button to seal a door between them and the vacuum of space, as Thor stops Cap's shield from being sucked out. He hurls it to shatter his ally's manacles. The 2 Avengers face the 2 Twins as Uriel boasts that Eimin's prophetic power has already foreseen the outcome.
Uriel slows time for the Thunder God. But Cap hits him with his shield to break the spell. He tells Thor to separate the Twins. Their time powers only work when they're together. Accordingly Thor propels himself and Uriel with Mjolnir through several interior walls, until they crashland in a forested part of the Ark. Leaving Steve Rogers to deal with Eimin.
Wasp is about to zap the Tachyon Dam when she's attacked by Grim Reaper, 1 of the dead guys the Twins resurrected as their Four Horsemen. He taunts her to kill him again, as Rogue did in #5.
Uriel hits Thor with shards of light(?), and flies off. Recovering Thor finds the dead body of Scarlet Witch (killed by Rogue in #14 because she thought Wanda was in league with the Twins).
1 of the futures the Twins have destroyed is the 1 where Red Skull put mutants in concentration camps, where Kang left the Twins to grow up hard. Eimin blames Cap for not stopping his arch-foe. Cap pretends to be losing the fight with her, but only so he can get to the button he saw her push earlier. It opens the door and sucks her out into space. Cap saves himself by grabbing the strap of his shield, which he had previously wedged in the wall nearby, after 'missing' hitting his enemy. Then he closes the door behind her.
Uriel has gone to the hall where the axe Jarnbjorn is kept. But Thor has tracked him down. Uriel hurls his shards again, but whirling Mjolnir fends them off. Thor grabs his foe and forces him slowly into a glowing disc. Uriel protests that this isn't how it was predicted to end! And Thor pushes him into the disc of energy, seemingly to his death.
There is an explosion. Jarnbjorn is sucked into space. Thor follows to find Eimin holding it before the immense form of Exitar.