Eight years have passed since the Clone Wars devastated the galaxy. The Republic has ceased to exist, and in its place is dominated by the Empire. All power lies in the hands of the Emperor, the secret master of the Sith, who, together with his disciple, the powerful Darth Vader, reigns supreme over the Galaxy, using the resources of the gigantic imperial war machine. Any dissent is suppressed, and only memories remain of freedom - all in the name of peace and order. But here and there, pockets of resistance begin to smolder and flare up, and the hottest of them is the Free Ryloth movement led by Cham Syndulla. After many small sabotages against the Imperial forces controlling their planet, Cham and his fellow rebels make a risky attempt deal a mortal blow to the Empire and plunge it into chaos, striking at the very heart. Their target is Emperor Palpatine and Darth Vader...