To propose this, I first need to explain something. If you have ever read the dawn of the Jedi book, then you know how the ancient Je’daii believed in the ashla and the bogan, the light and dark side of the force, respectively. However, you may not know that ashla and bogan are planets in the tython system, and these planets have great force presences. My idea is that unknown forces are planning to destroy ashla and bogan, in theory that doing this would destroy the force. The player has to stop them. Simple as that.