The great navigator Fernand Magellan became famous by opening a new route to the Pacific Ocean and to the rich eastern countries, where the spice trade flourished. According to legend, he was able to do this only thanks to an ancient map with an amazing secret.…Nowadays, the girl Katya was sent to visit her colleague, the old unpleasant Aglaya Mikhailovna, who had not appeared at work for several days. Katya found the apartment door open, and when she entered, she realized that her colleague was not at home. But she did hear suspicious stealthy footsteps —someone had entered the apartment after her.…