What is the secret behind all the idols and actors? That they are ghost hunters! And each company is competing with each other to see who can get rid of the most ghosts. Not all ghosts are horrid monsters, so what happens when one of the most established ghost hunters happens to develop feelings for one of the ghosts. Myungsoo gets more and more curious about HaNa, the girl ghost who has been following him around. Is her secret worth risking his life for?