The war is over. Ultron has been defeated, and now the team can turn their attention back to a certain troublemaker. They knew he had been taken back to Asguard and imprisoned, but if the stories were anything to go by, Loki would escape and attack again.
The day after the research starts, a man shows up. He's an enigma, SHIELD has no information on him, and Natasha says his name sounds fake. He can read the entire team with a look, and he knows more than he should.
But he claims he can help.
Who is this newcomer, and what side is he on?
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In case you haven't figured it out yet, this is a fanfic combining two different stories. Plot twist, I'm not going to tell you what the other story is, and we're going to see who figures it out the fastest. Good luck, and may the odds be ever in your favor!
If it's killing you, you could always check the tags, but if there's a sense of adventure in any of you, you'll figure it out amongst yourselves.