J.J. Abrams J.J. Abrams

"Currently sunny London" is standing in for a galaxy far, far away in the latest video from the set of Star Wars: Episode VII.

In the clip, director J.J. Abrams teases a charity contest that offers fans the chance to win a visit to the set, a walk-on role in the movie, and/or a private advanced screening of the film — all to benefit the Star Wars: Force for Change fundraiser in support of UNICEF Innovation Labs and Programs for children in need.

Get a first look at the Star Wars: Episode VII set

Abrams also gives fans something to really get excited about: a glimpse at a new version of an X-Wing Starfighter jet, looking a little worse for wear after being used in battle. (Yes, it's an X-Wing, not a Z-95.) Also making an appearance in the video? A rogue mouse droid, scurrying along the floor of the set.

Check out the teaser below:

Star Wars: Episode VII is scheduled to hit theaters on Dec. 18, 2015.