Day 1:
"Sam?" Adam blinked and felt the heat – the heat – at his back. Sam was kneeling over him in an apologetic way.
"I'm sorry Adam." Sam whispered, just loud enough to be heard over the crackle of the flames, "But we're in Hell. In Lucifer's cage."
Adam understandably freaked out. When he managed to sit up and stop screaming, he noticed that the whole place was on fire. Constantly on fire. He could see nothing past the flames.
"Lucifer and Michael are still arguing with each other so we should be fine for now." Sam assured, "Don't worry, we'll be fine. We have each other. We're family."
Day 2:
"My fault!? You're the one who messed with my Grace first!" Michael screamed, his six wings flaring out behind him like a male bird asserting authority.
"Dad always liked me better anyway!" Lucifer screamed back, his wings of equal impressive quality flaring as well. In the Cage, Sam and Adam – who were tucked in somewhat of a corner, together – could see both archangels' true forms. They were terrifying and beautiful.
"Oh yeah!? Well that was before he cast you out and put you in here for eternity!" Michael drew his angel blade, which looked like a long glowing sword of lightning in this plane of reality, and his multi-headed neck twisted around.
"Well now we're both down here and guess who's fault that is!?" Lucifer taunted, whipping around his snake head to fixate on Sam.
Sam raised his hands halfway in a placating gesture, "Don't bring me into this!" he said. He snake head receded and resumed fighting with Michael. It wasn't long until the Devil's angel blade was drawn too and they were physically fighting.
Sam and Adam pressed against each other, trying to avoid getting hit.
Day 3:
Michael and Lucifer fought some more, Sam and Adam continued trying not to get hit by angel blades.
Day 4:
Finally, Michael snapped. Lucifer said something about his "Left-second wing was always defective" because his "Grace was only the trial run" and therefore was the "weakest out of all of us archangels!".
Presumably, the environment and the insults finally got to him. Michael broke down and started crying, huddling into a shape that was very hard to see (Michael and Lucifer were always hard to see in their true forms) that looked like the fetal position. His wings wrapped around his form like a cloak.
Adam watched awkwardly, "…Should we do something?" he asked Sam, who was never more than a finger's length away from him. Adam had been Michael's vessel for a bit. His heart went out to the crying archangel.
"Shh." Sam said, pulling his half-brother into their little corner of low flames, "Don't say anything."