Storyline
The storyline of the game was intended to begin immediately after the conclusion of Ultima IX. In the story, the Guardian and the Avatar are now one being, with both personalities battling to dominate the other and take control. The game itself would have taken place in a world inside the Avatar's mind (the world was called "Alucinor", which roughly translates from Latin "Wandering in the mind"), and the people in the world were tasked to follow the eight virtues in the hopes of aiding the Avatar in gaining the power to completely defeat the Guardian.
Read more about this topic: Ultima X: Odyssey