Robert Pattinson and Kristen Stewart in The Twilight Saga: Breaking Dawn-Part 1
"It's such a far-fetched story and all …but it's really not if you just compare it to somebody who is my age and not in agreement with people that think they are making the wrong decision. That's such a common position," Stewart says.
Robert Pattinson co-stars as Edward. He says, supernatural elements aside, it's basically about the emotions that teenagers everywhere experience.
"He is a 108-year-old guy and he has never achieved anything he has wanted to achieve. He is stuck in adolescence," explains Pattinson. "When you're an adolescent you think nothing is given to you. You think everything is unfair …and he's been living that that for 100 years."
The romantic triangle in the Twilight saga includes Bella's best friend Jacob, who happens to be a werewolf, the mortal enemy of her beloved. He is again played by Taylor Lautner.
Taylor Lautner in The Twilight Saga: Breaking Dawn - Part 1
"Jacob becomes a man in this one and he has to make a lot of decisions," explains Lautner. "He is being torn between his two families so it was really tough. It was by far the most challenging one for me and it's just very exciting to see him in a completely different light than ever before."
Screenwriter Melissa Rosenberg has adapted all of the Twilight novels. But since the first film in 2008, different directors have taken on each chapter. Bill Condon, who helmed the musical Dreamgirls, takes over for Breaking Dawn.
"Obviously it's my take on the material, but you want to make sure that it doesn't betray what people's expectations are and yet still becomes a full cinematic experience," Condon says.
The Twilight experience ends with Breaking Dawn - Part 2 which Condon also filmed. It arrives in theaters this time next year.