"Lee Chang Moon, more often called by Changie, isn't a normal girl. She, to the other girl's eyes, is the most weird and awkward girl in the world. Why? Because of the simply fact of wanting to be a nun.
In fact, Lee Chang Moon is studying to be a nun. To normal people, the definition of the word 'nun' would be: A woman who has taken vows committing her to live a spiritual life or, simply, a woman who can't marry or having a boyfriend. But, for Changie, being a nun is more than praying and staying with her sister, it's helping the ones who need the most. Therefore, we can always find Changie cleaning something or gardening, because she doesn't want her older sister to get tired, due to their age. 
One day, her convent is holding a funeral. A very importante man had died and sister were helping his family, by praying and comforting them. Changie did as her older sisters and stayed by their side, until she felt that she was needed in another place. It was just a feeling, but she was loyal to her feelings as to her sisters. She walked through the beautiful gardens of the convent, but that feeling didn't end. She continued to walk. She walked and walked and walked and stoped. Right in front of her, this grown up man was sobbing and crying."