Nam Minji is a frail young girl with a stubborn personality. For as long as she can remember, she frequents the hospital due to an unknown illness that tends to make her feel lethargic during the day especially after intense bouts of activity. As a result, she did not have the opportunity to make friends in school and can come across as ignorant to the things that she has never seen before.

One day, she passed by a mysterious store on her way back home from her usual checkup. As she went in the store out of curiosity, she was greeted by a short, old woman who knew of her current situation.

This meeting caused her life to change as she meets a genie named Woohyun who can help her fulfill three wishes.

What she did not know was that the genie himself had a dilemma of his own.

How would this encounter benefit both of them?