R2-D2 and C-3PO are then abducted by Jawas and bought by Owen (Phil Brown) and Beru Lars (Shelagh Fraser), uncle and aunt of Luke Skywalker (Mark Hamill). While Luke cleans the sand out of R2-D2's gears, he discovers a fragment of Leia's message, and removes the droid's restraining bolt to see more; once free of the bolt, R2 claims to have no knowledge of the message. That night, R2-D2 leaves the farm to seek out Obi-Wan. When Owen and Beru are killed by Imperial stormtroopers, Luke is forced to leave Tatooine with Obi-Wan, Han Solo (Harrison Ford), and Chewbacca (Peter Mayhew) on board the "Millennium Falcon" to deliver R2-D2 to the Rebel Alliance. On their arrival at Alderaan's co-ordinates, they are pulled in by the Death Star's tractor beam and are forced to land, but eventually rescue Princess Leia. After Vader kills Obi-Wan, the rest of the group escapes and delivers the Death Star plans to the Rebel Alliance. R2 later serves as Luke's droid during the attack on the station. R2-D2 is severely damaged during the battle, but is repaired before the ceremony at the end of the film.