The first book in the Fallen series begins with the creation of a new group of arella. Two of the new creations, Ariel and Gadreel, become fast friends as they embark upon their seven years of training at the Angelic Academy. They live in a paradise and spend their days in contented camaraderie.
But there are whispers of a rebellion and rumblings of discontent against the Kings. One of their housemates, Helel, becomes involved in a secret group that is engaged in specialized training.
When Gadreel, too, becomes involved in the group, their friendship, and the Kingdom itself, is threatened.