'Guardians' (Hawkeye, Black Widow)

(inspired by a fanfiction I've been collaborating with)
It turns out Natasha Romanoff adopted a baby girl during "the blip". With her gone, now it's her sister Yelena Belova's time to look after the now-five-year-old child. With the help of Clint Barton and especially Kate Bishop, Yelena will stop at nothing to keep her namesake protected from remaining Widows and anyone else sent to kidnap her.