A finales de la decada de los veinte, mientras las huellas sangrientas de la Revolucion seguian frescas, el pais volvio a cimbrarse con la guerra cristera. Desde un poblado marcado por las advertencias del Mexico rural, el protagonista de esta historia hace el recuento de su propia vida revelando como se sumo al ejercito cristero, practicamente obligado por el sacerdote de su pueblo. La crueldad y la dureza no se hacen esperar. El y sus companeros asesinan a unos arrieros sin saber que son aliados de su causa, por lo que estaran a punto de ser linchados. Asi da comienzo su travesia definida por la violencia, la manipulacion politica, el fanatismo religioso, el sexo y la culpa.

El sermon de los muertos retrata con precision la cristiada, en donde se enfrentaron el gobierno y los grupos armados controlados por la iglesia. Pero no lo hace a traves de los personajes mas visibles en la historia oficial, sino desde la perspectiva de la leva, el hombre comun, los combatientes anonimos que fueron los reales protagonistas de uno de los episodios mas devastadores de nuestra historia. ENGLISH DESCRIPTION In post-revolutionary Mexico, at the end of the 1920s, one of the most deadly armed conflicts began: the Cristero War, in which the government and armed groups controlled by the Church clashed bloodily. Mario, the protagonist, lives in a small town that is razed by a flood and marked by the adversities of life in rural Mexico. As he recounts his life, we discover how he ends up joining the Cristero army, practically forced by the town priest. The cruelty and bitterness of the conflicts are immediate. He and his fellow soldiers murder some mule drivers without knowing that they are allies, for which they are later almost lynched. And thus begins a journey defined by battles, prison, and the extreme violence between the two sides, as well as schemes, the manipulation of consciences, religious fanaticism, and guilt. The Sermon of the Dead depicts this crucial moment in time with precision, but not through the leaders or the most visible players in the official history: rather, from the perspective of the drafted, the common men, and the anonymous combatants who were the real protagonists of the Cristero War.