This thriller tells the story of Patricia Lucas (Portillo), a prestigious lawyer who sees his life turns into a nightmare when his son disappears. Hours later, the child reappears wounded and he confessed that a man tried to kidnap him. The police eventually found the responsible, but they have no decisive evidence and the kidnapper is finally released. That is when Patricia decides to act and take the law into her own hands.

Some of the places where the film is being shot are the port of Barcelona, the Hospital de Sant Pau or the Jesús María School, in Sant Gervasi.