Qui-Gon's life prior to Episode I is mainly detailed in the Jedi Apprentice book series. In The Rising Force, set 12 years before The Phantom Menace, Yoda encourages Qui-Gon to take a new Padawan learner, following the failure of his previous apprentice, Xanatos, who turned to the dark side of the Force years before. Qui-Gon observes a small lightsaber tournament among a group of the Temple's older students, which includes the 12-year-old Obi-Wan Kenobi. He takes notice of Obi-Wan's skills, but also of the boy's uncontrolled anger, and refuses to train him. Shortly following the tournament, the Jedi Master leaves for a mission to the planet Bandomeer. On the transport ship, Qui-Gon is reunited with Obi-Wan, who is also being sent to Bandomeer to begin life as an agricultural labourer. During the voyage, Qui-Gon and Obi-Wan help defend a group of Arcona from the criminal organization Offworld Corporation. After putting an end to the tense situation, the two arrive on Bandomeer, where Qui-Gon receives a letter signed by his former apprentice, Xanatos. In The Dark Rival, it is revealed that the whole ordeal has been organized by Xanatos, now the leader of Offworld. Qui-Gon sends Obi-Wan off to his Agri-Corps duties, while he plans to meet with Xanatos to find an agreement between Offworld and Bandomeer. However, Xanatos plans to sabotage their meeting and kill Qui-Gon. The Jedi Master duels with his former apprentice, and he and Obi-Wan end Offworld's business on Bandomeer. Xanatos escapes, however. During the encounter with Xanatos, Qui-Gon discovers Obi-Wan's true potential and accepts the boy as his new Padawan. As a gift for Obi-Wan's 13th birthday, Qui-Gon gives his apprentice a special rock he found from the River of Light on his homeworld. In The Captive Temple, Xanatos attacks the Jedi Temple and nearly assassinates Yoda, but Qui-Gon and Obi-Wan thwart his plans, and in The Day of Reckoning, when they chase Xanatos back to his homeworld Telos, the fallen Jedi refuses to surrender and commits suicide. Qui-Gon is thus able to bring closure to a painful chapter of his life.