Zarrko, a mad time-machine-building scientist from 2262, believes that our nuclear weapons will enable him to take over the world of his time. He comes back to 1962 to steal one, and the Mighty Thor pursues him back to 2262.

The plot suffers from Alpha Centauri syndrome, where the time traveler might as well be from Alpha Centauri as from the future, but seeing the emergence of Kirby’s high-perspective artwork gives this issue a boost. In addition, the story provides a powerful image of the pre-Vietnam cold war era and its prevailing assumptions about the roles of women in society.

Given that the Time Stone is a key element to Thanos’s master plan, you’d think that time travel would play a major part in this movie, but not so. Doc Strange does use the stone to view a slew of possible futures, but we know that’s not actually time travel. So where does the time travel come into play? Pay close attention to the final thirteen minutes of the film, after Strange announces “We’re in the end game now,” and you’ll spot one definite time travel moment and a second possible moment.

After the devastating events of Avengers: Infinity War, the universe is in ruins due to the efforts of the Mad Titan, Thanos. With the help of remaining allies, the Avengers must assemble once more in order to undo Thanos' actions and restore order to the universe once and for all, no matter what consequences may be in store.

Hang on to your Tesseracts! Apparently, in Endgame[/em], when the Avengers traveled back to 2012 to swipe various things from the 2012 Avengers, they inadvertantly started a branch in time where Loki ended up with the Tesseract. Of course, once that occurred, the Time Variance Authority quickly spotted him as a Deviant and quickly recruited him to help in their fight against even more deviant Deviants.