From disc one's (Main Menu), select (Kingdoms). You will see a map that lists 9 kingdoms and asks you to "Search for the Hidden 10th Kingdom". You move [Left] from the 1st kingdom to the 3rd, then you move [Up] to the 4th, then you move [Left] to reach the castle. Press [Enter]. You have found the "Hidden 10th Kingdom", as you can see from the text screen that comes up. Once you've read the message, you can click [Up] one more time to highlight the (Magic Mirror). Selecting it reveals a short clip showing two of the characters entering the 10th Kingdom.
