Mycroft secretly works with SHIELD. Moriarty is trying to get in league with Loki. Sherlock and Fury do NOT get along. Watson tries to teach Steve about the modern world. And Tony is not too happy about another arrogant genius hanging around.
Pretty much two of my favorite fandoms in one pin. And Tom Hiddleston needs to be in Sherlock Series *cough cough Moriarty's brother cough cough*<--or Sherlock and MyCroft's.<<Tom is the long lost third Holmes brother.