Ok Folks after much reaserch, and reading!! I have finally pieced together the plot for this little world we call UO.
Where to begin? Well I guess the begining would be the best place. We all know that with the destruction of Mondain, The Gem of Imortality was shattered into thousands of pieces, and in each "shard" existed a perfect replica of Sosaria. So what does that give us? We have one "true" Sosaria and many replicas. We also know that the destruction of the Gem released an Even greater Evil upon all the shards, so great that it may even endanger the True Sosaria. What is this Evil? The Guardian and his lackies the ShadowLords.
In the Book "My Story" by Sherry the Mouse. We learn that an Extra-Terrestrial Force known as the Time Lord Spoke with Lord British, while Lord Blackthorn lay hidden in the shadows and spied upon his liege. In this conversation the Time Lord speaks to all the Lord British's simultaniously, and it can be assumed that the Blackthorn's of the other Shards were also hidden in the dark listening. The topic was the impending doom that awaits all the shards, and the only possible solution to this problem. The solution? As the Time Lord revealed shortly before that night Lord British came upon the idea of the path of the Eight Virtues. According to the Time Lord, in order for each shard to avoid the coming Evil, and fall to the Shadow as three shards had already fallen. Each shard needs to be brought into harmony with the True Sosaria. In so doing however, many people would die. Why? Once the shard is brought into harmony with the True Sosaria anyone who did not have a counterpart in the True Sosaria would perish. This disturbed Lord British because he does not want any of his people to die, but he also new that if the shard fell to the shadow, all would perish. Blackthorn however, was completely opposed to the idea. that is when he spawned the Theory of Chaos. To stop the shards from achieving resonant harmony with the True Sosaria.
So now we have the origins of Chaos and Order, and why they are opposed to each other. Now, we have some interesting speculation. The Zog Cabal... The only purpose of the Zog Cabal is to spread anarchy and destroy Order. With that goal in mind we can see who is the head of the Zog Cabal. Blackthorn. Now lets look at the Liche Twins, and Juo'Nar. The Twins and Juo'Nar are in League with the Zog Cabal, and I believe that they are but tools to spread Chaos, and Anarchy through the land. The Twins created an amulet that would apparantly rend the wearer imortal. It is my oppinion that this amulet was infact what Juo'Nar stole from the Monks who were in fact finishing the enchantments on this magical device. I further believe Since no body was ever recovered, that Juo'Nar is not dead but with his liege Blackthorn in hiding, and is waiting for the proper time to make his presence known as one of Blackthorn's Leutinants. I also beleive that Blackthorn, and the Zog Cabal have been in contact with The Guardian who was released by the destruction of the Gem. The Guardian has been manipulating BLackthorn, and abusing the many loop holes in his theory of Chaos to further his ends. The utter destruction of all the Sosarias
Well, this is the plot of UO as I see it. We the players will be fighting a battle to save the True Sosaria. In which case, most of us will perish. And if the side of Chaos Triumphs over Order then all hope is lost, as one by one the shards will fall, and in the end so will the True Sosaria and all life on it.