Chloé, a fragile young woman, falls in love with her psychoanalyst, Paul. A few months later she moves in with him, but soon discovers that her lover is concealing a part of his identity.

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.