Provost Captain Slade Moran sets out from Fort Benson, Colorado, to investigate the disappearance of an army pay roll and its military escort. The grim trail brings them to the empty roll coach and a murdered escort, with one soldier mysteriously missing. Captain Moran is led to Moundville where he is confronted by desperate men plotting to steal a gold mine. In this story of double-cross and mayhem Moran fears he will fail in his duty. Against all odds can he succeed?