One dark and stormy night, Mo hears her Inner Voice urging her to begin writing her memoirs. Having ignored her Inner Voice's advice once before, with near-fatal consequences, she decides, this time, to do as she is told. Mo looks back on her life, beginning with the crucial moment when she met another cow, who introduced herself as La Vache qui Rit, and assured Mo that there was nothing more stupid in this world than a stupid cow. Mo spends her life trying to prove to her friend that, despite being a cow, she is not at all stupid. Besides, she has her Inner Voice and a great desire to live! Set in the aftermath of the Spanish Civil War, in which defeated Republican supporters are still being persecuted by victorious Nationalists.