The Elder Scrolls IV: Oblivion takes place in the province of Cyrodiil on the continent of Tamriel. Cyrodiil is the central province of Tamriel and home to the Imperial City, the seat of the empire in the game. The storyline is set during the Third Era, specifically around the time of the Oblivion Crisis, where gates to the Daedric realm of Oblivion open throughout Cyrodiil, leading to an invasion by Daedric creatures