Slim Higgins bears the reputation of a hard character out in the west. He is placarded as a desperate fighter, who is quick in drawing his six-shooter. The citizens are warned against him. An old settler and his pretty daughter are driving across the desert in their prairie schooner, exhausted and weary for lack of water and rest. They do not dare to stop because to stop would mean death among the sand hills, so they drive on in the hope of finding water. Pete Lawson, a disreputable, semi-bandit, has discovered a pre-empted water hole. He will not permit anybody to take water unless they pay for it. He attacks the settler and his daughter. ''Slim" witnesses the episode and rights the wrong by force of arms. He falls in love with the settler's daughter and decides to reform.