Star Wars: The Clone Wars masterfully enriches the prequel saga by detailing the events that lead directly to Revenge of the Sith. A central plot revelation is the conspiracy of the inhibitor chips implanted in the brains of all clone troopers. The Season 6 arc centered on the clone Fives reveals that these chips are not for ensuring obedience, but contain a secret protocol: Order 66. Fives discovers that the chips can be activated to compel the clones to kill the Jedi. He is ultimately silenced and killed before he can expose the truth to the Jedi, a tragic failure that seals the Order's fate.
The series finale unfolds concurrently with Revenge of the Sith. Ahsoka Tano, leading a detachment of the 501st Legion with Commander Rex, successfully captures Maul on Mandalore. However, their victory is cut short when Darth Sidious executes Order 66. The inhibitor chips activate, and Rex and his men turn on Ahsoka. In a desperate move, Ahsoka manages to capture Rex and remove his chip, restoring his free will. Meanwhile, Maul, freed by Ahsoka as a diversion, wreaks havoc on their starship, destroying its hyperdrive before escaping in a shuttle. Ahsoka and Rex are forced to fight their way through their former comrades, though Ahsoka refuses to kill them. They manage to escape the crashing Star Destroyer and go into hiding. The final, poignant scene shows Ahsoka and Rex having buried the fallen clones, with Ahsoka leaving her lightsaber behind to fake her own death. Sometime later, Darth Vader arrives at the crash site and discovers his former apprentice's lightsaber in the snow, a silent, somber moment that underscores the immense personal tragedy of his fall to the dark side.
Another major arc reveals the fate of Darth Maul. After being defeated by Obi-Wan in The Phantom Menace, he is found by his brother, Savage Opress, insane and with cybernetic spider-legs. Once restored by Mother Talzin, he becomes a major player, building a criminal empire called the Shadow Collective and conquering Mandalore, where he murders Duchess Satine in front of Obi-Wan. His rise is cut short when Darth Sidious, seeing him as a rival, confronts and defeats him, killing Savage and taking Maul captive. Maul eventually escapes to orchestrate the Siege of Mandalore, his final act in the war.