In this adventure the diplomatic free-lance and his brilliant aid in war, Nan Tremain, are again pitted against their relentless enemy, Pfaff.

A chorus girl in a theatrical show is being pursued by a "Stage Door Johnny" while her somewhat prudish boyfriend tries to "rescue" her from a life...

After the train station clerk is assaulted and left bound and gagged, then the departing train and its passengers robbed, a posse goes in hot pursuit...