The Elder Scrolls IV: Oblivion

A lowly prisoner has been cast into the depths of the dungeon in the Imperial capital of the province Cyrodiil. The fate of this prisoner suddenly changed when Emperor Uriel Septim descended into the prison with his guards, fleeing from unknown assassins who have already slaughtered his children. But even an emperor cannot escape his destiny. Before the last assassin delivered the lethal strike, the old emperor entrusted the prisoner with the Amulet of Kings and asked him to find his illegitimat...