I want to start this off by saying that Oblivion was my very first elder scrolls game. I had not played Arena or Morrowind so I do not have such a rich understanding of the history. In Oblivion,The High Elfs (as far as I remember) were not total jerks like they are in Skyrim. I am wondering what happened in-between Oblivion and Skyrim that made them nearly destroy the imperial city and why they went..."evil" you can say. I know it has been 200 years in-between Oblivion and Skyrim (Or so I heard one of the NPC's say) but is there a quest or series of books I have not read in-game that explains why the Thalmor are around and why high elfs turned into complete jerks?