The Avengers are given a mission, Katrina Morrison is that mission.
Fifteen year old Katrina is kidnapped off the streets by the Avengers for a reason that they will not tell her, apparently it is for her own good but if you ask her, kidnapping her, knocking her out, and separating her from her friends is not (in her opinion) good for her in any way, shape or form. But when her friends are dragged into her mess, can she save them from her deranged father (a member of Hydra) or even from themselves. More importantly, will the Avengers let her?