A story of the great American desert, suggested by the lines written by Philip Sidney, who gave a drop of water on the blood to the salvation of the brotherhood.
Two suitor, Jim and John, court a girl, who hugs, when she is alone with him, John while the other is desperately bent on a pole. After their marriage , they go to west with their caravan and combine forces with the people of a train to defend themselfes from Indians.
The "weakling" is a violent man. The field of the framing are all field and American field until a very long field where the caravans are smalled compared to the desert. Indians attack and volunteers are called to get more water. Jim gives away his small share and is between life and death because he needs a last drop. The " weakling", John, gives him the last drop so he survives. After, there is the peace. The movie is one of the first westerns. There is the characteristic theme of the challenge and survival in nature. There are nicknames that delineate characters such as the "weakling" and how they will be in the later westerns (for example those of John Ford and Sergio Leone) nicknames like "Liberty Valance" the "good", the "ugly" and the "bad". In "The last drop of the water " win generosity and peace, as if peace were the consequence of the gesture of salvation.
