Within the city-state of Alkalaide, surviving among the crumbling old world ruins is a struggle. After being orphaned as a teenager and living within the city streets for her adolescent life, A young woman named Kai seeks to take advantage of her supernatural powers and finds work as an enforcer for an underground magic weapons manufacturer. Kai soon discovers that she's not the only one gifted with powerful abilities, and after accidentally placing a target on her head, she must adapt to the crushing environment of the world around her.