The Mos Eisley scenes occur early in Star Wars, when the young hero Luke Skywalker and his mentor Obi-Wan Kenobi travel to the spaceport in search of a pilot, accompanied by the droids, C-3PO and R2-D2. Obi-Wan warns Luke that the spaceport may be dangerous. Upon arrival, Luke and Obi-Wan enter the cantina, a dimly-lit tavern patronised by visiting starship pilots. Strong drink is on sale at the bar and there are frequent outbreaks of violence among the clientele. The cantina attracts a range of exotic alien species, although droids are not permitted to enter — the bartender orders them to leave, saying "We don't serve their kind in here". A band of domed-headed aliens plays a set of otherworldly jazz-style music. Luke is threatened with violence by two of the customers, Ponda Baba, an Aqualish, and Doctor Evazan, a deformed human, but Obi-Wan intervenes with his lightsaber, cutting Ponda's arm off in the fight. This is the first time a lightsaber is used on-screen in the Star Wars franchise. Obi-Wan introduces Luke to a pair of smugglers, Chewbacca and Han Solo, and they negotiate terms for passage to the planet Alderaan. After Luke and Obi-Wan have departed, Han is involved in a brief confrontation with Greedo, a green-skinned gangster; the exchange ends violently when Han shoots Greedo dead. As the group prepare to leave, they are followed to Docking Bay 94 by Garindan, a spy working for the Empire. Following a brief gunfight with Imperial stormtroopers, they board the Millennium Falcon spaceship and take off from Tatooine.