Transcript for 'Star Wars: The Force Awakens' Casting Secrets Revealed
Geeks all over America are dusting off their costumes and getting ready to line up for the opening on Friday night of the new st"star wars" movie and in preparation, ABC Chris Connelly sits down with the creators of this reboot. Monday night in Hollywood, the world premier of "Star wars: The force awakens." It's action and humor. It's new characters and lightsabers. It ends up being a story of adventure and loyalty and shock and surprise and uses this amazing and precious thing called the force to tells us how we're all connected. Reporter: So much of it the work of producer Kathleen Kennedy and director co-writer J.J. Abrams, all of it inspired by "Star wars" creator George Lucas. There isn't a day that goes by or went by that we were making the movie that we don't talk about George. You know, it is -- it's the standard what would George do. The thing that is most remarkable is that George got everything right. Reporter: Vet an of "Alias," "Lost," "Mission impossible 3" and the "Star trek" series and now 49-year-old Abrams was brought on the "Star wars" franchise by Kennedy. For decades top producer on Steven Spielberg's acclaimed films. I did pose this provocative idea of who is Luke skywalker that that would be something that was said by one of our characters. Why was who is Luke skywalker such a fascinating question? I guess because it spoke to a new generation. It was that idea that there would be young people for whom Luke skywalker was essentially a myth. Reporter: In crafting and setting thes for awaken, Abrams wanted the characters young, even bad guys like KY. He's like, Adam driver, really? Mike drop. One of the things that we talked about very early on was that the villain in the movie be young. He's in the midst offed a less 70 angst. That's new because there's a lot of male pattern baldness in the villains in previous "Star wars." You were right about me. Reporter: Months of auditions yielded the lead. John boyega was cast as the exstorm trooper fnn while daisy ridley was chosen for rey. When she came in and read you just know. And literally I had to not giggle too loudly from behind the camera because I was amazed at what she was doing. Reporter: To ease the stress, each week the entire cast dancing. It was this dance craze. Then we all got onboard. By the end, there were like 200 plus people, including Harrison Ford. Infront of the falcon. Reporter: Abrams hoping this film will have the same emotional punch that the 1977 one had on him as a child. The thing I felt when I was a kid when I left that theater was the world was huge. And to have people, especially kids, go to see the movie and see themselves in it and feel like, I'm capable of something extraordinary, that would be the greatest gift of all. Reporter: For "Nightline," I'm Chris Connelly in los Angeles. Our thanks to Chris Connelly. We should say "Star wars: The force awakens" comes to you on Friday from Disney. Thanks for watching.
This transcript has been automatically generated and may not be 100% accurate.