Palpatine began his seduction of Skywalker, grooming him to take Dooku’s place as a Sith apprentice. Meanwhile, Obi-Wan Kenobi pursued Grievous to Utapau, where he killed the Separatist warlord.

Skywalker discovered Palpatine was Sidious, but intervened when the Jedi sought to arrest the Supreme Chancellor. He pledged himself to Sidious, becoming Darth Vader. Sidious then issued Order 66 to his clone army. On planets across the galaxy, clone troopers turned their guns on their Jedi commanders, decimating the Order.

Sidious sent Skywalker to Mustafar, where he slaughtered the members of the Separatist Council. The Separatist Alliance was defeated and the war was over. And Darth Sidious was now Emperor Palpatine, the unquestioned ruler of the Galactic Empire and its massive war machine.