Act I - Obi-Wan's Rescue Mission
Act III - The Destruction of Grevious
Obi-Wan leads a mission to the planet of Utapau where he heads straight into a battle lead by GG. He tracks down the General and sees him sending a message back to PALPATINE. Obi-Wan finally realises that Sidious = Palpatine. He is suddenly attacked by GG's henchmen as the General tries to escape. He follows him on the back of a giant lizard-like creature and eventually kills the General with his blaster.
Obi-Wan sends a message back to Mace Windu who quickly grabs the remaining team of Jedi Masters and heads to arrest Palpatine. Anakin is there and tries to stop them. Anakin has no choice but to destroy Mace in his new role as bodyguard.
Palpatine calls the Senate together for an emergency meeting. He tells them that the Jedi refuse to hand the Clones back to the Senate. Padme and Bail try to convince the Senate of otherwise but fail. The Senate agrees to the destruction of the Jedi Generals.
Anakin is sent to the Jedi Temple to end the new threat to the Chancellor from the Jedi and to send a new request to the Clones through the Jedi briefing room. The Clones turn on their Jedi Generals and begin the Jedi purge.
NEXT: Act IV - Padme's Death