"The Volturi think Renesmee is an immortal child," a concerned Edward (Robert Pattinson) says in the "Breaking Dawn Part 2" trailer, putting emphasis on the middle syllable of Renesmee.
"She was born, not bitten," now-vampire Bella (Kristen Stewart) says about her fast-growing child.
About all this: in the "Twilight" world, transforming children into vampires is verboten because children can't control their emotions. Thus, the Volturi -- the vampire version of the Cosa Nostra -- must snuff out bitten children before they kill too many humans and reveal the existence of vampires to the world.
Anyway, Edward and Bella -- along with Jacob and everyone else; "A lot of red eyes around here," your favorite werewolf marvels -- must fight the Volturi to save Renesmee.