Astrid was brought back to restore balance in the city. Cursed with a past she can barely remember, she fills her role as an assassin with ease. Astrid realizes she knows dangerously little about the place she lives and the people she kills for. As her trigger finger begins to fail her, she fears she might be labeled as Unworthy next. When an enigmatic doctor draws her into a rebellion, she won't just have to save the city - she will also have to decide what it truly means to be human.