What would you do if you are force to leave your house and spend the remaining time of your summer vacation in an unknown place to you?

What would you do if you encounter things that doesn't seem to interest you?

What would you do if you meet someone very extraordinary? Someone who is not.... human? Infact, an angel... An angel that will change your life forever, or forever may seem seconds?

Choi Mi Kyoung is the typical girl who doesn't listen to her parents of all cost will meet the 'angel'... he escaped from his world just to find his missing little sister but he end up in a 'contract' of granting a girl's wish, but instead of granting the wishes and to find his little sister, he will end up being forced to stay on earth and eventually will brake the most valued rule in his own kingdom, never to fall in love with a human being. Mi Kyoung isn't the fantasy type of girl and absolutely does not believe in magic, angels and such things, how can he change her opinion? Can he?