R2-D2 and C-3PO are then abducted by Jawas and bought by Owen (Phil Brown) and Beru Lars (Shelagh Fraser), step-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.