Jedi Apprentice: The Hidden Past

The Rising Force is the third in a series of young reader novels that chronicle the adventures of Qui-Gon Jinn and Obi-Wan Kenobi prior to Star Wars Episode I: The Phantom Menace.

Publisher's Summary
After Obi-Wan Kenobi and Qui-Gon Jinn are hijacked to the planet Phindar, they find themselves trapped in a world gone mad. The ruling Syndicat controls the people by erasing their memories. The planet's only hope lies with a band of thieving rebels.

Qui-Gon and Obi-Wan are caught in a mind war.

And if they're not caeful, their own pasts will be wiped out forever.