 Luke and C-3PO pursue him, but are attacked by Sand People.Luke is knocked out by one of them (Opie) and is found by Obi-Wan Kenobi (Herbert), who takes them to his hut.Leia's message explains that R2 contains the plans to the Death Star, which must be sent to her father on her home planet of Alderaan and asks Obi-Wan to help.