Anakin frees the mutated Nelvaan warriors and destroys the Separatist item causing the climate change. He then kills all the Techno Union scientists, although he loses his robotic arm.
Palpatine and Masters Ti, Corobb and Moudama arrive at the ship that will take them to the bunker, but Shaak Ti decides to sacrifice herself by holding the enemy off. The others leave, and Ti finds that it is just a lot of Magna bodyguards, and not Grievous. She defeats them, and finally realizes what is happening down in the bunker.
Grievous has penetrated the bunker and strikes from the shadows, easily killing the Talz and Ithorian Jedi, and capturing Palpatine. Shaak Ti shows up, but is disarmed and tied up with electric cables.
Mace Windu arrives just as the captured Palpatine is herded onto Grievous' awaiting shuttle and does some damage to Grievous with the force, but the droid commander escapes.
Windu finds Shaak Ti and then contacts Kenobi and Skywalker, telling them that they need to return straight away as Coruscant is under siege.
The episode ends panning out from the space battle above Coruscant, setting the stage for Revenge of the Sith.