 Lucas envisioned 60 scenes, a script around 100 pages, and a roughly two-hour runtime.The two laid out the film's basic plot, but also discussed expanding the character of Han—with Lucas suggesting that he met Chewbacca because he was raised by Wookiees—and Luke's lost twin sister.Brackett and Lucas came up with various ideas for subplots, including a love triangle (Lucas compared Han to Rhett Butler, Leia to Scarlett O'Hara, and Luke to Ashley Wilkes), the reintroduction of Obi-Wan as a ghost, an arctic world inspired by "Flash Gordon" (1939–1940) and "The Thing from Another World" (1951), further development of the Force, and the new Jedi master being an elderly, froglike alien.