content: This, unfortunately, doesn't appear to be the same as the Age of Apocalypse story line. In the comics professor Xavier had a son, Legion. The Legion Quest story arc followed him as he went back in time to kill Magneto to try and bring about Charles' dream of a united man and mutant kind. However Legion failed to kill Magneto and instead accidentally killed his father.  http://www.comicvine.com/legion-quest/4045-41075/ This was followed by the Age of Apocalypse story arc. IMO the best story arc the X-Men series ever had. http://www.comicvine.com/age-of-apocalypse/4045-40752/ If they had followed the Legion quest story arc there would be reason to showcase both present day Xavier, and past Xavier, but this seems to be more of an introduction to En Sabah Nur (Apocalypse). Still looks like an interesting flick, but I wish they would have done Legion Quest and Age of Apocalypse...