The SHRA passed months ago, and heroes were fighting each other in the streets. Things have calmed down a bit since then; the heroes with secret identities have come to an agreement with the SHRA for the moment. In the wake of the civil war, the SHRA, the Avengers, and S.H.I.E.L.D. have created the Initiative—a super hero team in every state.
Your hero has recently come into their powers, or recently starting harnessing them. You are not Avengers, not an X-man, or even on a first name basis with the Fantastic Four. You could be a S.H.I.E.L.D. agent, a runaway A.I.M. experiment, mutant who just came into your powers, or even a HYDRA spy, trying to climb the ranks.
Whatever your history, you signed up for the 50-States Initiative and—should you pass your training—you will be sent to Chicago for some much-needed field experience. You have been placed under the not-so-watchful eyes of the Great Lakes Champions, who are very hands-off.