A publisher of novels begins to receive packets containing macabre: members of a female corpse. The appearance of a mysterious woman who seems related packages will lead to a situation of dramatic denouement.

Based on a novel by one of the greater Spanish writers of the 20th century (Miguel Delibes), "La Guerra de Papá" (Dad's War) tells the story of a typical day for a 3-year-old boy in 1964. The little boy, played by Lolo García, spends his day running around playing with his 5-year-old brother and interacting with the adults in the household (mother, servants...). Through his innocent eyes we see a portrait of Spanish society in the 60's (with its many conflicts and contradictions). The film is also a very good character study of the adults and of the boy himself, who feels jealous because he is no longer the youngest child in the house, since he has a 1-year-old sister.