Artemis is an eleven year old girl living in blue tribe. She lives with her father in a small hut at the river's side underneath the stars. Artemis's mother died eleven years ago giving birth to her and her mother's little sister went missing under mysterious circumstances or so her father says. Meanwhile in red tribe, blue tribe's nemesis , the tribe mourns the death of their queen and their princess's mysterious disappearance and the lost princess of their queen who unbeknownst to red tribe has actually been living in blue tribe since birth. also unbeknownst to Artemis her father is actually behind her mother's death and her aunt's disappearance, the weapon he used to kill her mother and aunt buried in the basement of their house. Also unknown to Artemis her mother is actually the queen of red tribe and her aunt's the next in line to rule making Artemis a princess. Artemis then learns a shocking secret about her friends, they were actually newborns who like her were taken from their mothers and made to believe they belong to blue tribe. but when war breaks out between blue tribe and red tribe, Artemis and her friends are left with a decision fight for the tribe they were raised in or fight for the tribe they belong to.