Jedi Apprentice : The Threat Within Jedi Apprentice : The Threat Within is the eighteenth book in a series of young reader novels that chronicle the adventures of Qui - Gon Jinn and Obi - Wan Kenobi prior to the events of . Publisher ' s summary . " When Obi - Wan Kenobi started off as Qui - Gon Jinn ' s Jedi apprentice , he was just a boy . Now , on the verge of manhood , he is starting on the path that will lead him to become a Jedi Knight … and the master of his own fate . " " As Obi - Wan and Qui - Gon investigate a strange wave of planetary sabotages , they find their relationship shifting — sometimes in a dangerous direction . As events turn deadly , their lives may never be the same again . " Plot summary . Two months since their last mission , Qui - Gon Jinn and the young Obi - Wan Kenobi are summoned in front of the Jedi Council . Jedi help is requested on the planet Vorzyd 4 . Vorzyd 4 was the most powerful planet in its system and Vorzyd 5 had to borrow much from Vorzyd 4 in order to survive . Vorzyd 5 recently built casinos and were making enough money to pay off their debt . Vorzyd 4 claims that sabotage on their planet is the fault of Vorzyd 5 and their ambitions to become the planetary power in the system . Jocasta Nu tells Qui - Gon and Obi - Wan that all the Vorzydiak s on Voryzd 4 work and children go to school and gain a day of work each year until they work full - time at age 17 . Qui - Gon and Obi - Wan soon make their way to Vorzyd 4 . Once on the planet , the Jedi are met at their landing pad by a Vorzydiak guide who would take them to Chairman Port who called for the Jedi assistance . They find out that the Vorzyd adults do nothing but work and try to improve work , and fun and games are frowned upon . Buildings and clothing are designed with function in mind and not with aesthetics . The Jedi are brought to Multycorp , and are immediately taken up a Turbolift to the twenty - fourth floor where accounting is done . Chairman Port greets the Jedi and tells them that he has deported everyone from Vorzyd 5 , but the attacks continue . No one has been hurt in the attacks , but productivity has been hurt . During the first meeting with the chairman , another attack begins . The computers in the building were showing erroneous information . Obi - Wan worked to try to fix the computers while Qui - Gon and Chairman Port tried to calm all the workers down . The interruption of work was causing physical and mental problems to the workers . Then , all of a sudden the attack stops and everything resumes back to normal . Soon a sound is heard throughout the building signaling the end of the workday . All the laborers and Jedi soon get on shuttles that take them away from the workspace and towards the homespace . Qui - Gon and Obi - Wan are taken to Chairman Port ' s house where they meet his wife , Bryn , and expect to meet their son Grath , but are told he is working and will be home afterwards . They also discover that the youth of the planet , specifically a gang called the Freelies , do not like this and are sabotaging the factories in hope of social change . Obi - Wan infiltrates the Freelies , but is discovered and the Freelie band splits into two groups , one following Grath , the other side following Flip , a Vorzydiak prone to violence . In the end , Obi - Wan and his friends manage to stop the work - only attitude of the populace . Cover gallery . This is a gallery of the different cover variations of " Jedi Apprentice : The Threat Within " .