Joo Ji Hoon has played a prince more than once. He was a modern fictional prince reluctant to marry Yoon Eun Hye in "Princess Hours," also known as Goong." And he played the dual roles of prince and pauper in the "Prince and the Pauper" inspired film "I Am A King."

In those roles he may have learned that being royal does not always make you right.

For his next role, he will play a royal servant who secretly disobeys a wicked king's orders.

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