Gripped with despair after a family tragedy, forensics investigator Paula suffers a mental breakdown that results in her admittance to a psychiatric hospital headed by Dr. Schultz. Meanwhile, Paula's partner from the force tries to help her, and another patient with controversial dietary habits is also admitted.

Disavowed by her former allies, Paula continues her search for answers into the mysteries that surround Dr. Schultz's hospital — even as it pushes her to face her most terrifying fears. Meanwhile, Marques and Barcellos take the investigation to another level in an unusual alliance, and Rafael and Camila discover critical information about Lúcia's case.