The video, narrated by Jedi Master Gnost-Dural, continued the backstory of Star Wars: The Old Republic by examining the Great Hyperspace War, the conflict directly responsible for the Great Galactic War.
Timeline 12: The Great Hyperspace War was the twelfth and final entry in the Galactic Timeline series that ties into Star Wars: The Old Republic. ' Among past threats to the Republic, the Great Hyperspace War stands above all other wars in galactic history.' - Gnost-Dural