Michael Gray is a sixth grader in Springfield, Alabama, when his father is killed in a boiler room explosion overseas. Little do they know that the explosion was caused by a power unimaginable to mere mortals. In the absence of his father, Michael is raised by his single mom. Five years later, Michael has done his best to move on from loss and make close friends. The group is composed of Michael, Lucas, Sarah, and Annabeth, and they're practically always together, but news of a possible invasion rocks their world. Lucas catches wind of it first, and this invasion is not just of their country; it's an invasion of the world. A mythological evil now hunts humanity. These four friends have very little time left to save Earth before humans become the oppressed, serving under the power of Hades. This divine insurrection has something to do with the death of Michael's dad, forcing the boy to face his inner demons, as well as shadow figures, chimeras, ancient gods, and more.