The sheriff of Melody Mesa has Gene pose as a music teacher to gain access to a mine he suspects is the hideout ofr a counterfeiting headquarters. Gene makes a recording of his singing to distact Roger Merritt, the owner of the mine, while he and Pat investigate the tunnel. Pat finds the hideout and sneaks some coins, and goes after Gene, who gets into a fight witj foreman Robinson, and his gang. Pat is knocked unconscious, and recovers with amnesia. Gene finds out that Roger isn't involved with the counterfeiting. Pat is found with the coins, and is arrested. Pat then regains his memory, and he and the sheriff go after Gene. It turns out Robinson is the real culpret, and tries to ride off with his dismantled equiment, but Gne, Pat, and the sheriff catch him, and arrest him.