Gonçalo is a majority partner in an oyster nursery company and a fish and seafood distribution factory.

Rich heir, disputes control of the company with his cousin and minority partner, André, who blackmails and swindles him.

Gonçalo's mother, Matilde (Helena Isabel), always disregarded her daughter-in-law for her lightness of mind and carelessness.

As it turns out, they could all have reason to have committed this crime because, after all, they all knew more about that passion than they let on - Alice and Nicholas; Xavier (Pompeu José), compadre of Augustus; Aurora (Sofia Nicholson), factory employee, and especially André (Nuno Pardal), Gonçalo's sinister cousin.

Judiciary Police inspector Miguel Meireles (Pedro Teixeira) will play a leading role in this investigation in which he invests everything, also, to try to cheer up his wife, Laura Meireles (Fernanda Serrano) who, above all, unsuccessfully wants to be a mother, and is dedicated to writing a new crime-inspired fiction that hits Marina and Gonçalo.