Prologue

"Avengers Earth's mightiest heroes. That's who they were."
"Name one hero who was happy."
"This is a story that gets darker with time."

Loki has escaped his jail cell in Asgard and is out to get The Avengers again. Thor must rush to tell The Avengers to gather, but finds out they have already gathered at S.H.I.E.L.D and brought their kids. Nick Fury and Agent Marie Hill have set up a school at S.H.I.E.L.D for the children so they can learn how to be heroes. But a mysterious threat comes into the picture one day. The Avengers can't find out if it was Loki or someone else. The mysterious threat becomes real. The Avengers must find a way to solve their problem, protecting the ones they love.