In Star Wars, Luke lives on a moisture farm on the desert planet of Tatooine with his Uncle Owen and Aunt Beru. Luke takes his first steps toward his destiny when he purchases the droids C-3PO and R2-D2. While examining R2-D2, he sees a message from Princess Leia Organa of Alderaan. When R2-D2 goes missing, Luke goes out to search for the droid, and is saved from a band of Tusken Raiders by Obi-Wan Kenobi, an old hermit. Luke and Obi-Wan seek shelter, and R2-D2 plays the full message for Obi-Wan from Leia, beseeching him to help her defeat the Galactic Empire. Obi-Wan says that he and Luke's father were once Jedi Knights, and that his father was murdered by a traitorous Jedi named Darth Vader. Obi-Wan presents Luke with his father's lightsaber and offers to take him to Alderaan and train him in the ways of the Force, but Luke rejects his offer.