When one door closes, another one opens… and that’s what is happening with Stephanie Meyer’s movie adaptations of her novels. While ‘The Twilight Saga’ will be concluding this Friday, Meyer’s other story of forbidden teenage romance, the adaptation of the sci-fi alien invasion novel ‘The Host,’ will be opening in theaters in a few months and the first full trailer has now been released.

The Host’ really brings an interesting metaphysical sci-fi premise that is surprising to see coming from an author who is more associated with vampires and werewolves than aliens, but a lot may be attributed to the writer and director of the film Andrew Niccol.

Niccol has made a name for himself in the genre for directing and writing the screenplays for ‘Gattica’ and ‘In Time,’ so it should be no surprise that this film will feel like a legitimate sci-fi movie and not something coming off the heels of ‘The Twilight Saga.’

‘The Host’ stars Saoirse Ronan (‘The Lovely Bones’) as Melanie Stryder who lives in a world that has been taken over by an alien parasitic species called Souls. They are wiping out the human population by taking over the consciousness and erasing the personalities of the people they inhabit. Melanie is one of the last humans who is part of the resistance fighting the Souls. Melanie is implanted by a Soul called Wanderer whose goal is to get her to give up the remaining humans on the planet, but instead, Wanderer faces strong opposition by Melanie’s consciousness. Add in the fact that there are two men who fall in love with Melanie (well, one is in love with human Melanie while the other is in love with Wanderer), and you have the next big YA sci-fi romance.

Although the premise of the film is based on the single book, the film is said to be the first of a trilogy and it’s being rumored that Meyers did later write two more sequels to ‘The Host.’

There’s a lot of promise to be seen in the trailer with lots of great subtext that can be touched upon, but will the film live up to this?

We’ll find out in a few months when ‘The Host’ is released on March 29th.

‘The Host’ Full Theatrical Trailer: