500 years after its construction, this film proposes to explain the history of the Castle of Chambord, based on the current work of two historians who are passionate about the iconography and secret codes everywhere in this building. For traveller of the 16th century, the Castle of Chambord seemed to emerge from nothing, like an unexpected construction, with a captivating geometry. Nothing else around but a hostile nature. A miracle, erected however thanks to the genius of man and the power of a king.