Obi-Wan Kenobi in the context of "Star Wars original trilogy"

Star Wars (also known as Star Wars: Episode IV – A New Hope) is a 1977 American epic space opera film written and directed by George Lucas, produced by Lucasfilm Ltd. and released by Twentieth Century-Fox. It is the first film in the Star Wars franchise and the fourth chronological chapter of the "Skywalker Saga". Set in a fictional galaxy under the rule of the tyrannical Galactic Empire, the film follows a resistance movement, called the Rebel Alliance, that aims to destroy the Empire's ultimate weapon, the Death Star. When the rebel leader Princess Leia is captured by the Galactic Empire, Luke Skywalker acquires stolen architectural plans for the Death Star and sets out to rescue her while learning the ways of a metaphysical power known as "the Force" from the Jedi Master Obi-Wan Kenobi. The cast includes Mark Hamill, Harrison Ford, Carrie Fisher, Peter Cushing, Alec Guinness, Anthony Daniels, Kenny Baker, Peter Mayhew, David Prowse, and James Earl Jones.

Lucas had the idea for a science fiction film in the vein of Flash Gordon around the time he completed his first film, THX 1138 (1971), and he began working on a treatment after the release of American Graffiti (1973). After numerous rewrites, principal photography began in March of 1976 in locations including Tunisia and Elstree Studios in Hertfordshire, England. Lucas formed the visual effects company Industrial Light & Magic to help create the film's visual effects. Star Wars suffered production difficulties: the cast and crew believed the film would be a failure, and it went $3 million over budget due to delays.

Luke Skywalker is a fictional character in the Star Wars franchise. He was introduced in the original film trilogy as the main protagonist and also appears in the sequel trilogy. Raised as a moisture farmer on the desert planet Tatooine, Luke joins the Rebel Alliance and becomes a pivotal figure in its struggle against the Galactic Empire. He trains as a Jedi Knight under the Jedi Masters Obi-Wan Kenobi and Yoda, and eventually confronts his father, the Sith Lord Darth Vader. Years later, Luke trains his nephew Ben Solo and mentors the scavenger Rey. Luke is the twin brother of Leia Organa.

Mark Hamill portrays Luke in all the films of the original and sequel trilogies, as well as in the television series The Mandalorian and The Book of Boba Fett. Hamill won the Saturn Award for Best Actor for his portrayal of Luke in The Empire Strikes Back (1980), Return of the Jedi (1983) and The Last Jedi (2017). He was also nominated for the award for his performance in Star Wars (1977). Luke also appears in novels, comics, and video games.

Ewan Gordon McGregor (/ˈjuːən/ YOO-ən; born 31 March 1971) is a Scottish actor. His accolades include a Golden Globe Award and a Primetime Emmy Award. In 2013, he was appointed Officer of the Order of the British Empire (OBE) for his service to drama and charity.

While studying drama at the Guildhall School of Music and Drama, McGregor began his career with a leading role in the British series Lipstick on Your Collar (1993). He gained international recognition for starring as drug addict Mark Renton in Trainspotting (1996) and as Obi-Wan Kenobi in the Star Wars prequel trilogy (1999–2005). His career progressed with starring roles in the musical Moulin Rouge! (2001) for which he was nominated for the AACTA Award for Best Actor in a Leading Role, action film Black Hawk Down (2001), fantasy film Big Fish (2003), and thriller Angels and Demons (2009). He was praised for his performances in the thriller The Ghost Writer (2010) and the romantic comedy Salmon Fishing in the Yemen (2011).