The Answer to every crossover

Every crossover story where the Avengers might meet Eleven/ Jane Hopper or Greasers might meet the Newsies or maybe Grinch comes to the big '25 and befriend Percy Jackson, can be answered in this story.

* Warning this story may never be finished. With verey crossover AU I write I will make another section to this story. That also means there might be years between parts but that doesn't mean don't read it. Each part should be able to be red by tself like it's own story!