Someone in India is deciphering secret codes and passing information from London's Downing Street to the natives, so Captain Robert Kent comes down from London to investigate. He disguises himself as a Rajah, and Colonel Wentworth introduces him to the colony.

Story of Western life. The action centers about a fight to put through a single track from a mine in Alaska to the coast. If not completed within certain time heroine loses title to property. Young engineer aids in successful fight.