Caius Zip takes part in the invasion of the French army in the city of Moscow, commanded by the legendary Napoleon. He also meets the Russian marshal, Kutuzov, the man with the mission to block the huge Napoleonic army. The participation of Caius will be important in this historical moment, as he solves enigmas and learns with the Russian marshal how some mathematical calculations can be crucial in taking strategic decisions in this battle of empires. After the story, in a very original manner, Napoleon tells us his memories of that time. A great lesson of strategy and of a notable human virtue: patience!