Jack is fifteen years old when he dream-travels to the year 1347. He is surprised to have arrived in front of the Perfumist's Shop in Poissy, France.

Here at the Perfumist's Shop, he will meet the three perfumists, Leigh, Isil, and Abe--inventors of the famous thieves' oil that ended the black plague. Look on the Internet for more info on thieves' oil.

In this time frame, the Hundred Years' War has taken its toll, and the Black Plague is creeping up north from Italy and about to enter Paris and England.

The balance of power in Europe is on the scale.

Fortunately for France, Joan of Arc has just helped King Charles win the battle at Orleans to save France. Joan of Arc is sixteen years old and now secretly hiding in the French royal castle.

Jack and Joan of Arc work together with the French Perfumists to save civilization and offset an extended dark ages quickly approaching. Since the perfumists saved the citizens of France from the Black Plague with their secret essential oil formula, King Edward of England is trying to get the secret formula of the thieves' oil from the perfumists to save his citizens, but they will not reveal the formula.

King Edward III of England is forced to bargain for the thieves' oil by paying a large sum of cash to France and also giving Joan of Arc a pardon from being burned at the stake.