With Queen Amanoa dead, Onderon enjoyed a brief period of peace, but a shadow still hung over the planet. So-called “Naddist Rebels” began to emerge, a sect that revered the teachings of the Sith Lord Freedon Nadd.
Master Arca Jeth and his students sought to cleanse Onderon of Nadd's influence by moving Nadd's sarcophagus to Onderon's moon, Dxun, but they were ambushed by Naddists who stole the sarcophagus. While seeking out the Naddists, Arca Jeth discovered that King Ommin, long thought dead, was being kept alive in a secret facility.
Also a follower of Nadd, Ommin joined forces with Nadd's undying spirit and managed to capture Arca Jeth. The king fled to a secret stronghold while Arca Jeth's student, Ulic Qel-Droma, called for Republic reinforcements.