The distant future. Humanity founded colonies on other planets, but centuries later the colonists forgot about it. One of the colonies slipped to the level of the Middle Ages, the most powerful state of which was the Kingdom of Pellie. The noble ear of Engard Derits, who has long been the head of the secret service of the Kingdom, hears rumors that Prince Ingo was seen in the company of an inveterate swindler, well known throughout the South. Alarmed, Deritz immediately turns to his friend Prince Matter, a powerful and mysterious man. Matter cannot refuse to help the Tron. On his airship, he flies to where one of the secrets of this world awaits him - forgotten, but deadly...