西班牙内战时期，胡安·卡斯特罗·佩雷兹(马里奥·卡萨斯饰)捡到了一只在外游荡的白色骡子。他为骡子取名瓦伦蒂娜，将它带到了军营每日精心照料，一人一畜成为了相互仅有的依靠。但是，毕竟战事难料，胡安隶属的左翼军队逐渐难以为继，为了保全瓦伦蒂娜的性命，胡安不惜一切努力，包括撒谎、欺骗、偷盗，甚至最后莫名其妙地成为了敌军的战斗英雄。

Finished the Spanish Civil War in April 1939, in November 1940, while Spain is being crushed by the ruthless boot of dictator Franco, Pepita travels from rural Córdoba to Madrid to be near her sister Hortensia, who is seven months pregnant and imprisoned, haunted by the shadow of a death sentence.