User blog comment:Western Gen/Speculations for Season 13/@comment-175.142.83.185-20150215233614

Doc's Return - After some event, the Reds and Blues found Doc. They filled him in on what was happening ever since he disappeared. Doc then told his story. After being hit by the Future Cube, he was sent to a location that was unknown to the people of Chorus (Using either Halo 4 Map Ravine, Impact, Haven or Meltdown).

Then, they found somethign that will be a game changer for the rest of the episodes.