“The Mind Stone is the fourth of the Infinity Stones to show up in the last few years. That’s not a coincidence. Someone has been playing an intricate game and has made pawns of us.” – Thor (Avengers: Age of Ultron)
“Endgame” is a term used to label the late stage of a chess game when there’s fewer pieces on the board–and the King becomes a more powerful figure. This is why Strange saved Tony–not only because Tony will be a pivotal figure moving forward, but to lose Tony would be checkmate. (x)
Okay, so, the plot of that part of Avengers v4 is that the Infinity Gems are being stolen, and Steve and a bunch of Avengers show up in the Himalayas to look for a Gem, whereupon they find Tony and the Illuminati also looking for the Gem, because it turns out that the Illuminati exist and also had (or thought they had) the Infinity Gems. This makes Steve mad, as we see in Avengers v4 #9:
They do in fact have a screaming fight in the snow, surrounded by all their friends:
I’m particularly fond of Commander Steve “No Chill” Rogers screaming YOU THINK THIS IS ABOUT MY FEELINGS? at Tony, who is like “…yes.”
I have omitted the pages in between, which were about everyone else standing around watching them fight and speculating about their relationship, but you should know that we get this line:
The serum amplifies everything that is inside, so good becomes great; bad becomes worse. This is why you were chosen. Because the strong man who has known power all his life, may lose respect for that power, but a weak man knows the value of strength, and knows… compassion.
“I have a real soft spot for my scenes with Downey. I think, you know, they do a nice job of giving Cap a lot of conflict in a lot of different ways from a lot of different places, and I personally just really like the… specific juxtaposition that Cap and Tony pose, and over the course of these movies I think they’ve had a really complex dynamic that I think can be related to–on a number of levels–it’s not just family, it’s friendship, it’s brothers, it’s… … They’re, to me, the most identifiable relationship, for me personally, within [Cap’s] arc.“ – Chris Evans
LemonGrenade 