1783: Laki, an Icelandic volcano, dormant for centuries, has just begun a violent eruption which will change the face of Europe! 1787: an incredible plot is threatening Marie-Antoinette, while in Prague, Mozart is putting the finishing touches to his opera. What is the link between these events?
Find it, and, on the eve of the French Revolution, follow an exciting journey from Versailles... to Prague, Vienna and Philadelphia.