Darth Sidious shows off the new Sith clone, JEK 14, an extremely powerful weapon of the dark side. However, JEK has a mind of his own and wants to be his own master. It's up to Yoda and the Jedi to stop the Sith -- and to try and bring JEK 14 to the side of good.

Obi-Wan discovers that several major Sith lords and their apprentices are gathered at the planet of Mustafar. The Jedi must hurry to Mustafar to destroy the Sith, but it's a trap and the Republic fleet is destroyed. Yoda, Anakin and the Padawans travel to Endor to find JEK. All hope now rests on JEK to come to the rescue.