Suzanna follows up the clue about Knight's Mountain but arrives too late to get the code. A university professor tells her she must change the order of the cards, otherwise the past will be altered. But how? Suzanna has the jack, queen and king of spades as she follows up the clue about Knight's Mountain. She and Paweł stop off at a mountain shelter for some food. There Paweł learns that people in green have passed through and taken the code as they want to cancel the past. The member of a mountain rescue team tells them to seek out Professor Jan Karski at Kraków University. Using the turbo boots, Paweł and Suzanna head back to Kraków where the professor tells them that Suzanna must change the order of the cards. But what will it prevent?