Captain Orellana is a Guatemalan private investigator who studies cases of an apparently “supernatural” nature, which always have a logical explanation, based on science. In this installment, The Captain is hired by Magalí de la Rosa, a worker at the Ministry of Public Health, who investigates a strange epidemic in the village of Creek Negro located in the department of Izabal, where the villagers seem to be victims of a supernatural phenomenon. The Captain will have to solve the case while his insatiable search for the truth involves him in situations of risk and heroic adventure.