An emergency call warns of strange noises on Calle Legalidad in Barcelona, possibly caused by a brawl between several drunks. The armed police force finds in an orchard on that street the corpse of a young woman who is half buried in a grave, she is a high-level prostitute. The crime shakes an entire country, rumors say that high dignitaries of the church, the military and the civil guard are involved. The scandal is imminent, so it is convenient to solve the crime as soon as possible.