The story takes place in the 1940s and begins when the contents of a trunk that has been left as a parcel at the Train Station is discovered with a false recipient and sender. The investigation of this case led by detective Mariano Corzo¸ turns out to be tremendously successful in the print media. The journalist Hipólito Mosquera is in charge of carrying out his own version¸ publishing classified information and distorting the clues that appear. In the course of the case¸ Mariano Corzo discovers that another detective¸ Álvaro Rosas¸ is the one who sells information to journalists and thanks to the help of Martina -the woman who runs the café-gathering-¸ discovers the clues that will allow him to decipher the case.