It was supposed to be a easy mission. Having been called out by the team for it- some group had invaded New York and was attacking and you all needed to stop it as well as protect the people, you were sent to stop an explosion from happening in the subway tunnel nearby. You managed to evacuate everyone..
Well, all but yourself.
You laid there, pinned under piles and tons of rubble, the air full of dust from the collapsed tunnel, no light funneling in to give any reprieve. You could feel that you were injured somewhere as jolts of pain wrecked you. The team was still fighting above, blissfully unaware of your predicament.
Pray to whatever higher being you believed in, you were going to need it.
Make this any fandom you want it to be, any city, have fun!