Lucasfilm kicked offs the annual “Star Wars Celebration” convention in London this week, with the release of a new movie poster of the upcoming film, Rogue One: A Star Wars Story, as well as behind the scenes footage.

The clip offers an up close look at the next installment in the Star Wars saga, which follows a group of rebels as they try to steal plans for the Death Star. Cast and crew of the film talk about the making of the film, including director Gareth Edwards.

Also, if you haven’t heard, Darth Vader will make an appearance.

Rogue One: A Star Wars Story is slated for release in December. Check out the movie poster below.

Rogue One: A Star Wars Story - Movie Poster