Exo Kris as Wu Yi Fan - The Crown Prince 

Yi Fan is a happy Prince who is lazy and always tries to play outside the Palace. He has no greed to become a King. He just wants to pass his life simply and happily. But when fate turn his life like this.........

T-ara Jiyeon as Park Ji Yeon - The daughter of Army General Park Jung Min

She doesn't want much. Like a normal girl, she also wants to fall in love with a guy, marry him and live together with him happily ever after. That's all. But when fate turn her life like this.............

Exo Tao as Hyun Zi Tao - The Crown Prince Body Guard

He value both brother & love. But when the fate turn his life like this...

Girls Day Hyeri as Lee Hyeri - The daughter of Attorney General Lee Dong So

I love him since I0 years ago. My dad said I'll become his wife one day and I'm happy to dead. Since 10 years ago, I'm sure that he's mine. I cannot lose him. If he left me, I'm sure I'll be dead. But when the fate turn me like this...  

This is not a perfect legend.

How will they try to protect their family, their loyality, their love?

How will they change their fate?

A perfect love story?

No....

The legend of a true love..............let's see