A number of bodies are discovered on the United States' border with Mexico, each carved with a unique symbol; a hummingbird. Detective Layla Mackenzie- dubbed the Ice Queen among her colleagues at the Mexican intelligence agency because she's famous for never showing an ounce of weakness- arrives at the scene and recognizes the image immediately; it is the calling card of a killer called Chuparosa, a man both feared and celebrated for his cunning and brutality. Known to be incorruptible in a seemingly lawless land, Detective Mackenzie has pursued this killer for years, yet knows little about him,except that he is merciless and heading to NYC- along with the rest of the world.