The supporting cast of Rebel Moon - Part One: A Child of Fire Afdah excels in their supporting parts and makes a lasting impression with their outstanding performances. Sofia Boutella plays the main role of Kora, a former army soldier who flees the Motherworld and seeks safety on a secluded moon in the furthest reaches of the galaxy. A threat to the moon colony is approaching, so Kora sets out to organize a group of rebels and take on the threat from across the galaxy. But Rebel Moon doesn't give much room for character development because it tries to cover a lot of ground in a brief amount of time.