Kim Jieun, the older sister of Kim Hyorin. She's exceedingly beautiful, flawless from head to toe.

Every guy's dream girl. 

Her smile brings warmth to everyone. She's sweet, cute, charming and adorable.

However, Jieun doesn't seem to be interested in any guys, simply because she can't bring herself to when she's afraid to fall in love. For Jieun, happy endings only existed in fairy tales. 

With the help of her little sister, Hyorin, Jieun soon falls in love.

But can she guarantee that she has found... The One?