Lumos—the international non-governmental, non-profit organisation founded by J.K. Rowling to help the world's eight million disadvantaged children in orphanages—is giving you the chance to win a round trip for two to New York, London, or Paris to attend the red carpet premiere of Fantastic Beasts: The Crimes of Grindelwald!

Lumos’ mission is to end the use of orphanages and institutions for the world's vulnerable children by 2050.

Learn how you can donate—and win—in the video above or at crowdrise.com