Following the everyday life of young forensic doctor Sara Grau, who is married to a senior executive, and the conflict between the desire for a normal life and a very crude reality that begins with the search for a serial killer.
This series centres on the investigation into a series of murders of elderly women in Barcelona. Sara, a forensic pathologist, is married but unfulfilled and has several seedy encounters with other men, which brings her into contact with one who will bring great danger into her work and private life.