An adventure for all times! Mark Twain teams up with Nikola Tesla in this historical fantasy pitting them against secret agents from Mars. These Martians have been sent by their tyrannical emperor to steal Tesla's latest and greatest invention: a crystal engine! Along with reporters Lilly West and George Ade, and the young Harry Houdini, Twain and Tesla journey to Mars aboard a fantastic flying machine to take on the conquest-driven Martians! This is an adventure in the tradition of H G Wells and Jules Verne!