. >> sarah conner? >> yes? >> reporter: this is the beauty about a film that involves time travelers, you can go back and change the entire premise. >> you have rules that make sense and stay within those rules. >> ar meal yeah clark plays sarah conner. >> is this your first big movie? >> yeah, yeah it is. >> "game of thrones." >> yes. >> then this. are you ready for the onslaught for the life change this is going to bring you? >> i believe i am, yeah yeah. "game of thrones" is a good introduction into this kind of scale of movie. >> reporter: jason clarke is john conner. >> mankind dies with us. >> reporter: kyle reese. >> why australians? >> why not? sorry. >> popular with the ladies. >> i mean, this were no complaints, obviously. >> reporter: i love "terminator." from what they showed me this has the same je nais se quoi of the original. and one of the same lines. >> i'll be back. >> what? >> reporter: i'm nick watt for "nightline" in hollywood. >> the je nais se quoi. "terminator: genesis" hits theaters in