Three years later, Luke travels to find Yoda

The original trilogy begins 19 years later as the Death Star space station nears completion, which will allow the Empire to crush the Rebel Alliance, an organized resistance formed to combat Palpatine's tyranny. Vader captures Princess Leia, who has stolen the plans to the Death Star and hidden them in the astromech droid R2-D2. R2, along with his protocol droid counterpart C-3PO, escapes to Tatooine. There, the droids are purchased by Luke Skywalker and his step-uncle and aunt. While Luke is cleaning R2, he accidentally triggers a message put into the droid by Leia, who asks for assistance from Obi-Wan. Luke later assists the droids in finding the Jedi Knight, who is now passing as an old hermit under the alias Ben Kenobi. When Luke asks about his father, Obi-Wan tells him that Anakin was a great Jedi who was betrayed and murdered by Vader.[16] Obi-Wan and Luke hire the smuggler Han Solo and his Wookiee co-pilot Chewbacca to take them to Alderaan, Leia's home world, which they eventually find has been destroyed by the Death Star. Once on board the space station, Obi-Wan allows himself to be killed during a lightsaber rematch with Vader; his sacrifice allows the group to escape with the plans that help the rebels destroy the Death Star. Luke himself fires the shot that destroys the deadly space station.[5]

Three years later, Luke travels to find Yoda, now living in exile on the swamp-infested world Dagobah, to begin his Jedi training. However, Luke is interrupted when Vader lures him into a trap by capturing Han and the others. During a fierce lightsaber duel, Vader reveals that he is Luke's father and attempts to turn him to the dark side.[9] Luke escapes, and, after rescuing Han from the gangster Jabba the Hutt a year later, returns to Yoda to complete his training. However, now over 900 years old, Yoda is on his deathbed. Before he passes away, Yoda confirms that Vader is Luke's father; moments later, Obi-Wan's spirit tells Luke that he must face his father before he can become a Jedi, and that Leia is his twin sister. As the Rebels attack the second Death Star, Luke confronts Vader as Palpatine watches; both Sith Lords intend to turn Luke to the dark side and take him as their apprentice