The Elder Scrolls V: Skyrim is a sequel to The Elder Scrolls IV: Oblivion. The story takes place 200 years after the conclusion of Oblivion, set in the titular land of Skyrim, a northern province of Tamriel (the continent on which all the games in the series have taken place). The once great Empire has fallen to the elves. The Blades, the once great defenders of Tamriel and its royalty, are no more. The King of Skyrim has recently died, provoking a civil war amongst the native Nord race. This war is last in a sequence of prophetic events foretold by the Elder Scrolls. In the mist of this event the Nordic god Alduin, a massive dragon, arises to destroy the world.[15] The player will assume the role of the last Dovahkiin (Dragonborn), a dragon-hunter annointed by the gods to help fend off this threat to Tamriel and Skyrim. Aiding the player will be Esbern (voiced by Max von Sydow), one of the last descendants of The Blades.[2]
Via
wikipedia http://en.wikipedia.org/wiki/The_Elder_Scrolls_V:_Skyrim
so no imperial gaurd humans are now slaves (well maybe not but they dont rule) to the elves...YET AGAIN.
Though technically the dragonborn is a descendant of the imperial line, i mean thats the only way he/she would be part dragon (akatosh) so there is always hope.