A lifeless gold prospector is found by Ken Parker around Bitter Creek, New Mexico. Having brought the body to the city, the young Marshal Arthur Comb organizes an expedition to look for his partner, who is rescued seriously injured. Meanwhile, among the citizens, instigated by Comb's father-in-law (to whom he owes a lot), the certainty is spreading that the two are victims of the Navajo, even if there is no evidence against the Indians. Only the Marshal and Ken will try, with great difficulty, to find out what the truth is.
