Description: The 1960s, three young boys Franek, Andrzej and Jacek spend their holiday near the ruins of the Teutonic castle where archeological work is underway. Fascinated by history, they decide to explore the castle on their own. Their vehicle falls into the castle dungeons. Then, they unexpectedly travel to 1406 on the same castle where the Teutonic Knights originally lived. They boys are attacked by the Knights, but they manage to escape to the court of Prince Janusz Mazowiecki , where ither ite as a telephone or a car arouse admiration and disbelief. The film begins in the sixties of the twentieth century. Three young boys Franek, Andrzej and Jacek spend their holiday near the ruins of the Teutonic castle where archeological work is underway. Fascinated by history they decide to explore the castle on their own. Their vehicle falls into the castle dungeons, and they unexpectedly travel to 1406 in the same castle where the true Teutonic Knights originally lived. The boys are attacked by the Knights, but they manage to escape. They are taken to the court of Duke Janusz Mazowiecki, where they demonstrate future items such as a telephone automobiles that cause admiration and disbelief.