While excavating France’s Dordogne Valley, the time machine, a new invention of a team of scientific researchers, accidentally sends archaeologist Edward Johnston back to the 14th century… and he lands in the midst of the fierce Hundred Years’ War between France and England. Johnston’s only chance of rescue is in the hands of his son Chris, his assistant and some of his students, who need to make the same treacherous route. But the intrepid travelers have only eight hours to roam the hostile and devastated territory and save the teacher, before he gets lost in history forever.