For decades, the viceroy of the great Khan Kublai ruled in a distant eastern country rich in expensive stones. Every year he collected a large tribute from this country and sent it to the ruler. But one day a rebellion broke out in those parts, and to save the priceless tribute, all the riches were put into huge chests and hidden in a safe place. Centuries have passed, and no one has been able to find untold treasures. Nowadays, Sonya, a Russian tourist who came to Greece on vacation, was unwittingly drawn into the search for a hiding place. Is the inexpensive souvenir she bought at the local bazaar the key to the treasure's location?