Arena Plot - Arena is the first game in the Elder Scrolls series. Emperor Uriel Septim VII is betrayed by Imperial Battlemage Jagar Tharn and imprisoned in another realm. You alone are left to travel the vast continent of Tamriel in search of the legendary Staff of Chaos that will allow you to rescue the true Emperor and restore peace to the Empire.
Daggerfall - Daggerfall, the second game in the Elder Scrolls series, takes place in the provinces of Hammerfell and High Rock. The Emperor recruits you to exorcise the walking spirit of the late King of Daggerfall, but soon the story unfolds to something far greater than avenging the death of a noble...
Morrowind - A rising-in-power demi-god is seeking to take control of Vvardenfell, and when it seems all hope is lost... You, the Nerevarine is discovered, travelling across the province in pursuit of stopping the dreaded blight, becoming the Nerevarine and defeated the dreaded Dagoth Ur.
Oblivion - Oblivion, the fourth game in the Elder Scrolls series, is set within the province of Cyrodiil, the heartland and Imperial capital of Tamriel. Emperor Uriel Septim VII is assassinated in flight from his own palace, but just before he dies he passes to you - the foreordained of his dreams - the mystic Amulet of Kings. The adventure begins with the quest to find Uriel's lost and illegitimate son, the only heir to the throne. In a world where the forces of darkness seek their ultimate dominion over the ranks of man and mer alike, you alone stand between the future of Tamriel and the gates of Oblivion.
All but Morrowind was taken straight from Uesp.net because morrowind's page doesnt say anything like that...
What did you vote for? Why?
I picked Oblivion just because the plot seemed so "big" to me.