The Elder Scrolls IV: Oblivion is set in the fictional province of Cyrodiil, which is the heartland and Imperial capital region of the continent of Tamriel. The game's story unfolds during the Third Era, specifically six years after the events of The Elder Scrolls III: Morrowind. Cyrodiil is a varied land due to its central location and proximity to other provinces of Tamriel

. In the game, the player begins imprisoned in a cell in Cyrodiil and becomes involved in a conflict that involves the Daedric realm known as Oblivion, which is a dangerous other-dimensional plane. The main quest revolves around stopping the invasion of Tamriel by Daedric creatures through gates to Oblivion that have opened across Cyrodiil