Inspector Claudia Carreras wants to be a good cop and a good person. In that order. But both objectives are beyond her reach because of her desolation after the murder of her partner and lover, Tomás, in Madrid.
To forget it all, she moves to Valencia, where she is supposed to investigate the strange kidnapping of Lara Valls, the daughter of a wealthy family. Soon she discovers that nothing in this case is what it seems, and little by little, she begins to empathize with Lara: both are addicted to literature, to the past, to suffering. Three drugs that can be fatal.