And here’s the official synopsis from the film-maker himself:
Darth Revan continues his rule of tyranny in the galaxy. Conquering system after system the Sith Lord comes across the discovery of an ancient Sith artifact. He swiftly aims his resources to recover it in hopes to gain the advantage in the ever growing war. Republic intelligence catches wind of the artifacts existence and head to the planet Syres to try and recover it.
Incidentally, the video is a finalist in the 2011 Star Wars Fan Movie Challenge (and rightly so in my humble opinion), and you can vote for it to win here, as well as checking out the other finalists.