Kang Hye-jung stars in the lead role as a 20-year-old woman with the mental and emotional skills of a seven-year-old, who falls in love with a policeman (Jung Kyung-ho) she sees as her Prince Charming, but must face tragedy when she is forced to deal with certain realities about herself and those around her.

Sang-eun is a pretty 20-year-old girl, that is warm hearted and possess an extraordinary gift for folding paper into various figures.

One day Sang-Eun meets a traffic officer, that she believes may be the prince of her dreams.

The traffic officer is named Jong Bum and he has a strong penchant for beautiful woman.

Sang-Eun, while she places things into boxes and wraps by year, is now worried that her mom may soon go away like her friend's grandmother did.