During the Great Jedi Purge, Emperor Palpatine's Clone troopers attack the Jedi Temple on Coruscant. As the Jedi Purge rages, Palpatine remarks that this is his best birthday ever. On Kashyyyk, Jedi Master Yoda and the Wookiees flee several Clone scout troopers intent on executing Order 66. Yoda manages to commandeer an AT-RT walker and warns Obi-Wan Kenobi that the Clone army has turned on them.