Morita is the youngest daughter of the famous adventurer Marco Polo. Marco, Morita and their family are swept up in a race to protect Venice from the combined attacks of Genoa, their rival for trade, and the Mamluk King of Egypt, hungry for wealth. The Polos travel from Venetian canals to merchant brigantine ships playing a deadly game of hide and seek, and then back to land to follow the legendary Silk Road when Morita is kidnapped. Her race across Persia with the Mongolian Golden Horde leads to intrigue, treachery and battle in the heart of Venice, as the Polos and their fellow citizens risk their city to defeat enemies on land and sea.