Time flees, love stays (смешанная)

Despite his initial reservations Stephen agrees to help Thor and the Guardians of the galaxy to fight an interdimensional entity. Things go terribly wrong and Stephen gets sucked into an alternate timeline and needs an extraordinary amount of magic to open a portal to create a way back home. Unfortunately most of the important events which shaped the world haven’t happened yet and the people Stephen would usually rely on are either out of his reach or unable to help him.
To add to his woe Stephen ultimately has no choice but to turn to an unlikely source of support. Thor’s dead brother, the notorious Loki, happens to be alive and kicking in this timeline. Not only is Loki the vivid image of a person doing incredibly well, no, he has also succeeded in accumulating immense power by calling the Tesseract his own.