What 'Blade Runner 2049' stars can reveal about the film

Actors Harrison Ford, Ryan Gosling, Robin Wright talk about the "Blade Runner" sequel, which is set in a futuristic, dystopian Los Angeles.
6:13 | 10/05/17

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Transcript for What 'Blade Runner 2049' stars can reveal about the film
"Blade runner 2049" and its futuristic dystopia on the first few seconds they see. They know you're here. ??? Reporter: Mood, the pace, the feeling and -- Harrison Ford and Ryan gosling. I had your job once. I know. This is not a running, jumping, and falling-down movie. This is not a light comedy. This is not a bromance or a car chase movie. I'm sorry. God, that was a hurtful thing to say. Reporter: Reports from the said that Ford actually made contact during filming of one fight scene. Did you punch him in the face by mistake? Yeah, why not? I mean, don't you sometimes get irritated about how old you are and how good-looking he is? I just -- I took a small moment. And let it fly. Right? I threw 80 punches, I hit him one time, that's a pretty good average. I saw it written in the margins of his script, "Make contact." Reporter: Ford reprizes his role from the original 1982 "Blade runner," movie, ex-cop Rick Eckert. Just answer the questions, please. Reporter: Then and now. What do you want? I want to ask you some questions. Reporter: It's 2049 in the Los Angeles where it still rains a lot more than real life and gosling plays a new generation of blade runner. Action! Reporter: Cleaning the streets of replicants, rogue humanoid robots. The theme, what it is to be human. If you could look up and to the left, please. If this gets out, we've bought ourselves a war. Where are we going to be in 2049? We're already producing bio engineered people. Will they be as emotionally human as we are? That could be an army of people that could take over. You're not making me teal any better about this. Robin Wright is gosling's boss. So what you saw didn't happen. Yes, madam. You were rather scary in a good way, don't you think? Good cover. That was a really good cover. The minute I decided to do the hair back and shellac it -- I was like, there she is. Who did you bring? Reporter: It's taken over three decades for the sequel to happen, stymied by Wright's issues and the like for that long. The first time I heard they wanted to do a sequel to "Blade runner," I said what an exciting, fantastic, bad idea. Reporter: And the script won him over and the crucial Harrison Ford and Ryan gosling. As massive as it is, as provocative conceptually as it is, it's still a very intimate, personal and emotional story. And that's so unique to "Blade runner." Reporter: Ridley Scott does not return to the director's chair. He's a very busy man. Harrison Ford wanted to shoot sooner than later, so that's why I came on board. Reporter: He's an EP and adviser to the Canadian dennivilleneuve who includes "Arrival." You're the director but Ridley Scott is looking over your shoulder? He gave me total freedom. Reporter: Early reviews are, frankly, stellar. But when the original was released in 1982, it was not a critical smash and a bit of a box office flop. In the 35 years since, "Blade runner's" cult status has grown and grown. Time to die. The original is such an experience. But what's also interesting is the experience you have after you've seen it. Because part of the reason why I think it became a cult classic is because you couldn't shake it. It was painting this nightmarish vision of the future that felt possible. Does the nightmarish vision of the future seem more plaus nibble 2017 than in 1982? To me I can clearly see that unless we revert to respect for science, a love of nature, and our progeny, what comes behind us, the planet is under dire stress. Reporter: Sequels to classics can be a dangerous game. There is pressure, right? To make sure that you do it right? That pressure's always there. To make sure you take advantage of the opportunity you have with every film. Reporter: I'm not going to tell you anything about the plot. I'm terrified of putting out spoilers for this film. I don't know what I'm allowed to say. I don't either. It makes it hard for me to then do a six or seven-minute story -- Yeah, for you. But it's hard for us too. Reporter: Watching is not a struggle. 2:30 long. Daunting, perhaps. Until you try it. My butt went to sleep but I didn't. Sorry for your butt but your brain stayed on. Reporter: Thanks to the legendary cinematographer Roger deek kin deekens and the actors giving their all. There's action and enigma and the deepest question of all. This is what it means to be a human being. What are our opportunities, what are our responsibilities, do they really exist? It's not the answers, it's the there are a lot of questions left unanswered. And it's kind of like life. Reporter: I'm Nick watt for "Nightline" in Los Angeles.

This transcript has been automatically generated and may not be 100% accurate.

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