In the desert colony of Khandar, a dark and mysterious magic, hidden for centuries, is about to emerge from darkness. Marcus d'Ivoire, senior captain of the Vordanai Colonials, is resigned to serving out his days in a sleepy, remote outpost, when a rebellion leaves him in charge of a demoralised force in a broken down fortress. Winter Ihernglass, fleeing her past and masquerading as a man, just wants to go unnoticed. Finding herself promoted to a command, she must rise to the challenge and fight impossible odds to survive. Their fates rest in the hands of an enigmatic new Colonel, sent to restore order while following his own mysterious agenda into the realm of the supernatural.