Essef - In 1999, Professor Edward Johnston heads a team of historians and archaeologists in studying a site in the Dordogne region of France where the medieval towns of Castelgard and La Roque stood. Suspicious of ITC's (their funder) detailed knowledge of the site, Johnston flies to their headquarters in New Mexico to investigate. Soon the archaeologists find modern objects - that they recognize as Johnston's eyeglasses - amongst untouched ruins. Researchers Chris Hughes, Kate Erickson, André Marek (a medieval re-enactor), and David Stern fly to ITC. They learn that Johnston traveled to 1357, to the site they were excavating, but did not return as expected...