We are in the 80's Spain, a dictadure is finished, and the years of transition conclude in the presidency of left and progresist politics. Luis Durán, a ex-policeman agent that was expelled from the corp, now working as private eye. Two works of investigation, find a lost old man and a anonymous petition about the mysterious death of a businessman going to discover a dangerous plot of political corruption and the way of Durán revenge.—Felipe Glez. and El Señor X