Emily Moon and the Fire Demon is the first in the Darkworld series, it tells the story of an intelligent and unusual twelve year old girl, who has always felt like the odd one out, mainly due to her left eye, which is completely black. One evening, Emily returns home to find her parents have been possessed by demons. Rescued by an agent from the Darkworld Order, a secret organisation that protects humans from evil forces, she is taken to the order's headquarters on the island of Bartzabel. On the island, she is trained as an agent to develop her dark powers and defend against beasts that she only thought existed in nightmares. She makes some friends as well as enemies. The only problem is a demon lurks on the island watching and waiting to take her to its master.