Travel through contemporary France and turn back the clock to discover an extraordinary past. An unsuspected legacy is suddenly revealed - how did a simple lagoon make it possible for journeymen to build the Chambord castle, why wouldn’t Champagne exist were it not for an immense, prehistoric ocean, how is the fate of coal miners intimately tied to a strange, subterranean jungle? A marvelous tale, somewhere between dream and reality, offering an alternative history of France that takes an off-beaten trail into the dawn of time.