An elderly woman has secluded herself in her remote home in the French countryside, when a young foreign couple on vacation suddenly intrudes on her isolated life.

This outrageous time-travel comedy follows the misadventures of a wacky medieval knight (Jean Reno) and his faithful servant when they are accidentally transported to contemporary times by a senile sorcerer. Mayhem rules as these 12th-century visitors try adapting to the wildly confusing modern world. To avoid being stuck here for good, however, they soon begin an all-out cosmic assault on their former castle -- now a luxury hotel -- in their quest to return to the past.

France, 1809. Captain Neuville is called to the front, leaving his future bride heartbroken. Her sister decides to write letters on his behalf to cheer her up.