instead of Clint it was you and instead of Natasha it was Yelena. You were sent on a mission to kill Yelena. She had just been exposed to the antidote to Dreykov's mind control and was currently on the run from several black widows which she successfully out ran but her car flipped after an arrow shot by Taskmaster exploded under it, leaving her injured. Still, she managed to out run him too but was quickly cornered by you. You were a former black widow and was now an Avenger, just like Natasha. Yelena was an old friend of yours, both from childhood and the Red Room so you spared her and brought her back to the Avengers Compound. The others were ok with it, not knowing it she was your mission. But that all changed after they found out she was a former widdow and didn't take quite well to it Sam: well you didn't say she was from the Red Room! he protested, remembering how you had introduced Yelena as a friend