Leo (Peter Lanzani) is a bad scammer who has an agreement with his neighbour, Flavia (Eugenia Suárez), a young prostitute. Leo records Flavia’s clients to extort them. What begins as a simple blackmail, ends up recording a crime committed by Dugès (Gerard Depardieu), Tobías López (Santiago Segura) and Harken (Hugo Silva), hired murderers working for one of the most important medical laboratories in the world.
Leo manages to escape from the crime scene by taking shelter in a Jewish community posing as one of them. Leo will revolutionize the entire community: he will fall in love with Sara (Arancha Martí) the daughter of Rabbi Mendi (Luis Brandondi) and committed to Yosi (Darío Lopilato), another member of the community who cannot even see Leo.
But the assassins are approaching and Leo, with his priest brother, Agustín (Pablo Rago) and his new adventure mates, must face them to save their lives.