There was an idea (Smash Fiction listeners know this) called the Surprise Party Initiative. The idea was to bring together a group of remarkably nerdy idiots who could take the casts of popular stories and replace them with fictional characters from other stories, then compete with each other to see whose party would be the best one at completing the original story. It's a pretty stupid notion, but what the hell, we've done it twice before, might as well do it again!
As you may have guessed, this time around, the SmashFic hosts are making their own teams of Avengers to fight off Loki and the invading Chitauri! With Dan as both their guide and their judge, they draft a set of heroes, compete in challenges from the film, and try to score the most points on the path that leads, inevitably, toward schwarma.
Kit and Claire maintain their personal brands by picking exactly the characters you'd expect them to pick, Liz Logan uses her Surprise Party debut to provide one of the most heartbreaking moments in the history of storytelling, and Dan ends the contest with a final, massive twist that drives everybody in the world insane. Probably.