Bronco is taking two wagons of Army supplies to the U.S. Army Engineering camp plus transporting the reporter Emmett Dawson, from the New York Chronicle. The Army has moved all the settlers out of a basin and is damming the river running into it to build a lake to provide a water supply. However, one stubborn old farmer, Tom Christopher, refuses to move from his land. Dawson meets Christopher when Bronco tries to get permission to cross his land but fails. Christopher claims the Army attacked their home the night before shooting up his house. Neither Bronco, the Army, or even eventually the Governor can persuade him to move. Dawson's story makes the man into a hero and turns sentiment against those trying to evict him, but someone else is trying to force the old man and his granddaughter out through more unscrupulous means. Bronco assigned to diplomatically protect Christopher and his granddaughter finds himself in the middle.