14-year-old Callisto Kader has had a hard life between bouts of homelessness, high school bullies, and being an outcast. A school fight gets her mistaken for an Arc, individuals with amazing powers. She's conscripted into a covert school for young super soldiers, with no gifts of her own. She now has to deal with a squad of misfits, still feeling like an outcast, and dangerous forces trying to kill her. Her choice is simple: fight their war or spend her life running. But when you're being hunted every decision is one of life and death.