The cast of Guardians of the Galaxy Vol. 2 are no strangers to philanthropic efforts. Last summer, star Chris Pratt offered a trip to the set of the film in an effort to raise funds for the Lake Stevens Boys and Girls Club in Pratt’s home town. The campaign included several videos in which the actor almost gave away some of the film’s biggest secrets.

Now Pratt and director James Gunn are back to reveal more secrets and raise money for another worthy cause. Through the Marvel Hero Acts program, they are raising money for Save The Children, an international organization that provides learning materials and relief to children. Of course, the announcement of this latest charity competition, Gunn and Pratt also discuss their favorite Marvel superheroes and Gunn has no shame, admitting to Pratt that Star-Lord doesn’t even rank as one of his top two super-heroes. (Spoiler: Rocket and Groot clearly take top rank.)

Entering the contest is simple, not even requiring any monetary donation. Fans simply upload a photo to MarvelStudiosHeroActs.com and Marvel Studios will make a donation to Save The Children. In return, you will have a chance to win a trip to the Guardians of the Galaxy Vol. 2 world premiere.

Good luck to all that enter! Tell a friend, and maybe they will take you along if they win.