Blades, Daedric gods, usurpers, everything will be thrown at you in this Elder Scrolls game.
You start the game, as ever, in a jail and it's up to you to make the best of it.
Should this be your first The Elder Scrolls game, I would assume there are quite a few things not clear yet, so a very brief Introduction:
The game takes place in Cyrodiil, the capital province of the empire of Tamriel. The Blades is an organization of the Emperor's personal bodygaurds.
Your job this time around, is to protect the empire from a daedric invasion.