It's 1876 and all the Indians go to tranquility other than the Comanches lead by Black Cloud. When Black Cloud wipes out a town, just 6 soldiers are left and they head for the nearby fort. In the desert they are strengthened by participants of a stagecoach as well as discover some water at a deserted goal. Selected by Black Cloud they send an Indian boy who was Black Cloud's prisoner on to the ft while they attempt to negotiate with Black Cloud whom they learn lacks water.