Princess Hours or more commonly known as Goong(2006) is a romantic korean drama. Story evolves around the current Crown Prince of the Korean royal family (This is just a fiction.Korea is no longer ruled by kings).

The story started off with a deal made by the previous emperor and
his good friend that their grandchildren will get married to each other.
 At that time, the royal grandchild intended was Yul but when
Yul’s dad (Crown Prince at that time) died in an accident, then
Shin (Joo Ji Hoon), Yul’s cousin, took over as the Crown Prince after
the emperor passed away. But Shin has someone whom he
liked(Hyo Rin) and decided to propose to her.Shin was rejected so he
agreed to take up the arranged marriage with Chae-kyung (Yoon Eun Hye).

However, he still hangs around with Hyo Rin quite often.
Meanwhile, Yul who just came back from overseas,fell in love
with Chae-kyung. As both Shin and Chae-kyung are now the
Crown Prince and Princess of Korea, their quite intimate relations
 with Hyo Rin and Yul respectively creates rumours after rumours,
which jeopardise the status of the royal family. After living with
Chae-kyung for long, Shin began to like her.

But will he be too late to preventYul from taking her? At the end of this drama,there was a litle unexpected twist but still an acceptable one. Anyway, Princess Hours 2 is in the making.
*Profiles of the main casts: