The film takes place three years after the end of the Clone Wars, and the Clone Wars are nearing their end. The Jedi Council has tasked Obi-Wan Kenobi with capturing General Grievous, the leader of the Separatist army, and bringing him to justice. Meanwhile, on the planet Coruscant, Chancellor Palpatine has increasingly risen in power. His political power has transformed the once war-shunning republic into a powerful, belligerent Galactic Empire. To his closest ally, Anakin Skywalker, he reveals the true nature of his power and his secret promise to the Force in an attempt to turn him to the side of evil...