The Chiss people some of them has served the Sith Empire but they wanted their empire of their one so one day near the end of Sith Empire one of the female Sith named Darth Zora who managed to get the ability to never die by age so she decided to take her people/army and other races mostly humans and purebloods who are loyal to her went with her to the unknown regions near the ends of the Galaxy where her and people ancestors used to live called planet Sapphire they formed the Dark Chiss Empire and one day they returned to the Galaxy and get revenge for their people Jedi Order and the Republic one day the a human teen who was a former Jedi Padawan but was betrayed by his former "friends" and the Rebellion so Darth Zora and her apprentice named Darth Lycra decided to take him as another apprentice but soon they started to fell in loved with him and few other Chiss too and they will help get his revenge