Nada Mayhew persuades her sickly father to spend a few months in the mountains, where they are mistakenly suspected as being federal agents by bootleggers Bob Clark and Jim Hendricks. Using a map that Nada found, the girl and her father set out in search of a hidden vein of silver, but they must make a wild ride to Ghost City to escape the gang, who also wish to find the silver. When surveyor Dick Carroll finds Nada in his cabin, Nada assumes that he is one of the gang and ties him up. Jim Hendricks arrives and captures Nada. Realizing her mistake, Nada gnaws at Dick’s bonds while Hendricks searches for the map, accidentally drinks poison, and causes a fire in his agony. All three escape. Dick overcomes Hendricks, and Nada and Dick start out in search of the vein.