The plot revolves around a rivalry between sand-hog "Hard Rock" Harrigan (O'Brien) and his foreman Black Jack Riley. At the center of their conflict is their mutual affection for heroine "Andy" Anderson (Irene Hervey). But when the chips are down and Riley is trapped in a tunnel cave-in, it is Harrigan who comes to the rescue.

Kincade shoots Baird and takes the map to his gold mine. Sutherland finds the dying Baird who tells him the mine's location. Kincade, having lost the map, now goes after the gold Sutherland has taken out of the mine.

When Shag Smith kills Jim's brother Bob, Jim and Thunder quit the rangers so they can cross the border and join Smith's gang. Jim's plan is to get the gang to cross back over the border where the rangers will be waiting.

A stock market broker plans to liven up his boring life by taking up piracy on the high seas.