One of history’s greatest cartographer, Johannes Cellarius, disappeared in the 17^th century under mysterious circumstances. Now, more than 200 years later, his body has been recovered in a bog in Germany with an amazing object clutched in his fist- a 57 carat ruby. Cellarius’ connection to the Tavernier stones has prompted treasure hunters from around the world to converge on Europe, among them John Graf, an Amish cartographer and David Freeman, a brilliant gemologist turned con-man.  They reluctantly form an alliance to find the solve the cryptic message on one of Cellarius’ maps and find the famed Tavernier stones, racing against countless others to be the first to claim one of history’s greatest prizes.  Competition is very stiff, however, and the two may not make it out of this adventure alive.