Roy Rogers and Dale Evans team up in this tale of silver mines, kidnappings, and secret passages. Roy plays a border guard who has to rescue Dale from the clutches of underhanded miner Rex Gridley (John McGuire). How does he do it? With help from Trigger, of course! With a cast that includes Andy Devine as Sheriff Cookie Bullfincer, director William Witney gives us an enjoyable drama from the golden era of Republic Pictures!