Adapted from the eponymous book written by the criminologist Ilana Casoy and the writer Raphael Montes, the fictional thriller accompanies this determined police officer, who uses all her investigative skills to dive into two intriguing cases and help victims to wake up against violence and injustice. The first, a woman tricked by an internet scammer. The second, Janete, the wife of Brandão, an intelligent and dangerous serial killer who leads an apparently normal life, but who, behind the facade, reveals a cruel mind capable of imprisoning its prey like birds in a cage.