The Golden Medal that has the key to unlocking the secrets of the Mayan Civilization was stolen by Lord Zero! Professor Gilt sends Montana and Alfred to the ruins of the ancient Mayan Civilization in order to reclaim it. On the way they meet Melissa, a diplomat's daughter in the city of Merida. They head into a pyramid. What was waiting there?

During renovation work at the St. Sophia Church, treasures from the Byzantine Empire are discovered. Under Professor Gilt's orders, Montana, Alfred and Melissa head to the church. However! Lord Zero is already there! The great chase for the treasure ensues.