Basically, here's how I see the beginning of Episode I: Obi-Wan, on some sort of mission vital to the cause of the first Clone War, crash lands on Tatooine. Ship ruined, he goes to the nearby town of Mos Eisley and enters the Cantina to look for a pilot who will transport him. He meets Willhuff Tarkin who introduces him to Anakin Lars, who, needing money, agrees to transport him. He takes Obi-Wan back to the moisture farm, where Owen talks Anakin out of it. "Why on earth would you transport a crazy Jedi on some damn fool-idealistic crusade?" However, he agrees to let Obi-Wan take shelter there for the night, but tomorrow he must go back into town and make other arrangements. Staring out at the binary sunset, Obi-Wan tells Anakin of the Jedi, how his real name is Ben Kenobi, and that Obi-Wan was the name given to him by his master, a wise, centuries-old Jedi Master called Yoda (only mentioned, never seen). Inspired by tales of adventure beyond the dusty plains of Tatooine, he sneaks off in the middle of the night with the Jedi, leaving nothing but a note for Owen promising to return, meets up with Tarkin (his first mate) and gets in his awesome ship to be named at a later date, heading off to go on adventures and awesomeness, ultimately joining the Jedi Order, getting the name Skywalker, betraying the Jedi, and becoming Darth Vader.