When the Louvre's curator is found dead, with baffling codes carved into his body, it sets off a high-stakes quest for Harvard symbologist Robert Langdon and cryptologist Sophie Neveu. Their investigation takes them through hidden passageways, ancient societies, and secretive archives, all of which revolve around the works of Leonardo da Vinci. Together, they must decipher the labyrinthine puzzles before a global conspiracy brings down the very pillars of Western civilization.