At the end of the 1930s, in the arid mountains of Mexico, a Christero colonel and his last men resist surrender.
The men are peasants, poor but proud people. They require their government’s support and need ammunition in order to fight.
The support does not arrive and life in the sierra turns more difficult every day; the war is almost over. The men, in their suffering, illness and solitude, begin to feel abandoned. They are almost the last ones.