Act One of this 12-part event concludes with a four-way battle royale among both teams of Avengers, the Invaders and the agents of S.H.I.E.L.D. - all above the landmarks of Washington D.C. Plus, Doctor Strange discovers the secret of the time-lost Invaders, all while trying to keep all of history from rewriting itself…and the Avengers out of reality.

Rated T+