1491: Leonardo looked upon his invention, understood its powers, and knew he must hide it from the men of his age. Thus, a profound treasure was lost for five centuries. Now the race to find it begins. Hurtling across the Atlantic, a plane goes down -- taking with it a page from the journals of Leonardo da Vinci. In Georgetown, the home of museum curator Rollo Barnett burns to the ground. Only his young son, Reb, escapes alive. Are the tragedies connected?...