Bang, Bang (My Baby Shot Me Down)

This WinterWidow story started as a one-shot but proceeded to eat my soul. Follow Natasha and the Soldier through the day mentioned in TWS when he shot her, through their past together in the Red Room, and beyond. Possible spoilers for the MCU through CA:CW. It's a slow-build story, but stick with it. (And dear people, when I say M, I do mean M.)