You're an ex Avenger turned mercenary. You work jobs for Valentina Allegra de Fontaine, and today she's paired you with another of her agents, John Walker. She'd assigned you to a test operation and wanted the two of you to work together, some kind of expirement on group work.
It was a simple mission: locate and destroy remaining Red Room sites and report back to base and eliminate rogue Widows who didn't respond to the cure. The mission was going smoothly. In and out, back by Friday.
RUSSIA. THURSDAY. TWO AM. ABANDONDED METRO LINE.
Walker grunts, cocking his gun. The two of you are stuck in a railcar that's half submerged in a tunnel section and it's boarded up. You're watching a Widow, who's a few cars down. You have been for two days. This mission has gone much longer than you intended it to.
"This is fucking stupid." Mutters John. "If it hadn't been for your dumbass plan we wouldn't have been stuck here in the freezing fucking cold. Thanks a lot, genius." Walker glares at you, going silent once more.