Pierscien ksieznej Anny (1971)

The film is set in the 1960s. Three young boys, Franek, Andrzej and Jacek, spend their holidays near the ruins of the former Teutonic castle, where archaeological works are underway. Fascinated by history, they decide to visit the castle on their own. Driving a vehicle they have constructed, they fall into the castle's dungeons. Then, unexpectedly, they move to the year 1406 to the same castle where the real Teutonic Knights live. They are attacked by them, but manage to escape. They find themselves at the court of Prince Janusz Mazowiecki, where the props they bring from the future, such as a telephone or a car, arouse admiration and disbelief. --A_A--