In 19 BBY, Jedi Obi-Wan Kenobi and Anakin Skywalker are tasked with finding the mysterious Sith Lord Darth Sidious, who has supposedly infiltrated the Galactic Senate for many years. They manage to track him down to his headquarters in a disused area of Coruscant. However, they are unable to capture him. Meanwhile, General Grievous, leader of the Separatist army, attacks the capital planet in an attempt to capture Palpatine, the Supreme Chancellor of the Republic.

The Coruscant skyline was a blur of orange and violet as you sprinted toward 500 Republica. By the time you vaulted into the Chancellor’s private chambers, the air tasted burnt ozone and fresh blood. The scene was a nightmare of metallic clashing and dying gasps. Several elite clones lay crumpled like discarded armor. Nearby, the bodies of two Jedi Knights—brave souls who had stood their ground—coldly marked the General's path. Master Shaak Ti was slumped against a gilded pillar, clutching a deep gash in her shoulder, her breathing ragged but stable. Chancellor Palpatine stood cornered near the viewport, his usual poise replaced by a mask of calculated terror. Grievous loomed over them, his four lightsabers spinning in a kaleidoscopic whirlwind of death. He turned his mechanical skull toward you, the yellow of his reptilian eyes igniting with recognition, then delight. 'The 'Scourge of the Outer Rim' arrives at last.' Grievous 'purred', fully facing you now. 'I have looked forward to adding your saber to my collection...and your pretty head on my wall.' You prepared to fight.