After her peaceful life in an Imperial Province is wrecked by barbarian invasions, the young Cheon dedicates herself to revenge. Nurtured by a black sorceress, honed to a killing machine by an old Northern soldier, she murderously stalks the wasted landscape of southern Hyperborea with her servant, a former Imperial lady, whom she has freed from slavery. Despite her inexperience she looks indomitable until captured in battle by the barbarian horde that raped her land. Stripped naked before its duke and his concubine she seems lost. But in a mutually benficial bargain she is freed. Her growing fame as a warrior of demonic strength makes her a coveted prize for the slave market. The vain Cheon is about to see her wish to visit the Old Imperial Lands come true but not in the way she imagined. So begins the saga of Cheon who ultimately comes to hold the fate of a world in her hands: she must become the lone bringer of dawn or perish with all who will not join the forces of darkness.