A long time ago, in a galaxy far, far away...
The Old Republic lies in crumbles, Revan's army managed to destroy most of the known galaxy, countless innocents died and many Jedi were slaughtered, and those that were taken captives, were tortured until they accepted the dark side of the force and turned against their former friends. In a desperate attempt to ensure that peace would be found once again, the Jedi did a daring attack against the Dark Lord's ensign ship, capturing him and erasing his memory.
They succeeded in their mission and the former Dark Lord lost all trace of himself, enlisted as a soldier in the Republic's army, he would find his way once again to the Jedi, unknowingly to himself, this wouldn't be his first time, proving himself worth and that he was once again the Revan he had been before taking on the mantle of the Sith, he fought side by side with Bastila Shan against the forces of Darth Malak.
Triumphing over them and in the process, destroying the Star Forge, he recovered a precious shard of his memory, and in that shard he knew he had to leave the known space, for a major threat was waiting in the unknown regions. Even when the Prodigal Knight left and all trace of the Sith seemed to have been erased, even after years later, the Sith Triumvirate would be destroyed by the Jedi Exile, one of the greates heroines of the galaxy, another threat would appear, a new Dark Lord would appear, a secret apprentice of Revan, intending to destroy the weakened Jedi Order, because their time had ended.