Count Dooku looked at his fallen victims in Anakin Skywalker and Obi-Wan Kenobi. He suddenly turned around and saw Grandmaster Yoda coming towards him. The two exchanged words and tested their strengths in the force before they ignited their lightsabers and jumped towards each other. They dueled for some time until Yoda began to get the upper on his former apprentice. Dooku in response use all his of his remaining energy to try to push his former master backwards, but Yoda jumped away and towards Dooku, thrusting his lightsaber through his chest. Dooku fell to the ground as Yoda tried to bring his former back to the light. Finally Dooku with his last breath revealed that Palpatine is the Sith Lord just as Obi-Wan and Anakin wake up as they heard it. Anakin is in shock at this, but realizes that it is the truth.
Back on Coruscant, Sidious felt what had happened and executed Order 66. Some Jedi were dead, some were not as Order 66 was not as effective as it could have been after a few years.
Yoda, Windu, Ki-Adi Mundi, Plo-Koon, Kit Fisto, Anakin and Obi-Wan will arrive at Coruscant and burst in Sidious's office finding him with Darth Maul and Savage Opress. Obi-Wan will be in shock, but there won't be any time for that now. Sidious rise up from his chair, cackling as he lunged over his desk and killed both Mundi and Fisto with a flick of his blade. Maul locked blades with Kenobi, while Anakin did the same with Savage. Palpatine pushed Koon to the ground as he spun his blade at Mace and Yoda as they blocked the attack. Maul growled in rage as he kicked Kenobi and lunged at him, but the Jedi Master ducked the attack and in one swift strike decapitated Maul. He suddenly spun around watching as Yoda flew into the wall and Sidious unleashed a stream of lightning, sending out of the window and to his death. Meanwhile Anakin disarmed Savage and knocked him into unconscious. Sidious growled in rage and let out a massive roar pushing all of the remaining Jedi backwards as Koon tried to push Sidious back, but the Chancellor leapt at him and with lightning speed decapitated him.
Enough of this- Yoda finally said as he pushed Sidious backwards and into the wall. Obi-Wan then ran at Palpatine kicking his blade out of his hand as it fell to the window into the streets of Coruscant below.
You are under arrest, Chancellor- Obi-Wan declared pointing his blade at Sidious.
Anakin, help me- He pleaded- The Jedi are taking over.
No, Chancellor, you are a traitor and you have lost- Anakin said as now all three Jedi pointed their lightsabers at his throat.
No, no, no, no, no, you will die- He yelled as he unleashed a lightning attacked at all Jedi as he put all of the hatred he can muster into it.
Obi-Wan and Anakin were blasted backwards to the wall into unconscious, but Yoda blocked the lightning and finally having enough of Sidious, he redirected the lightning towards him as Sidious's body exploded all around him and it was over. The Jedi manage to get enough evidence from his office and expose him.