Robert Pattinson, Kristen Stewart and Taylor Lautner are all back for the final "Twilight" movie.  In case you missed the last one, Bella and Edward got married, Bella almost died during childbirth, and Edward turned her into a vampire to save her life.

This one picks up with Bella adjusting to her desire to eat humans, their half-breed child growing fast, and some PG-13 vampire relations. The kid has the ridiculous name Renesmee, and she's played by 12-year-old Mackenzie Foy.

The movie hits theaters TONIGHT at 10:00 p.m.  Here's what else you might want to know . . .

The Volturi have a strict law forbidding the creation of a vampire child, because kids can't control their blood lust, and pose the greatest risk of exposing the existence of vampires to the world.  And the penalty for creating one is death.

Now that the Volturi think the Cullens created a vampire child, they want to kill Renesmee and wipe out the Cullens.  Except, we all know that the baby was BORN, and not bitten . . . so she's not really the monster they fear she is.

Alice Cullen has a premonition of the Volturi threat, so the Cullens spend the first half of the movie rounding up support from random vampires around the world.

Since Jacob "imprinted" onto Renesmee and became her sworn protector, the wolf pack joins in defending the Cullens from the Volturi too.

There's an epic battle that almost got the movie an R rating because of the BEHEADINGS. 

...And for better or worse, the movie will have a different ending than the book....