Star Wars: Episode III - Revenge of the Sith

Star Wars: Episode III - Revenge of the Sith is a 2005 American epic space-opera film directed by George Lucas, the third and final film of the Star Wars prequel trilogy. As the Clone Wars draw to a close, Anakin Skywalker is seduced by Chancellor Palpatine, falls to the dark side of the Force, becomes Darth Vader, and the Galactic Republic collapses into the Empire (Wikipedia)