Choi Hye-jin may be a skilled singer, but she lacks the self-esteem. Beyond her singing talents, however, is an uncanny ability to communicate with ghosts. One day, her senses go out of control when the seductive ghost of Park Seulgi possesses her. Embedded her with a fiery new "personality," Hye-jin starts turning heads, including that of Jackson Wang, the hottest singer of a boy group called Got7 and Hye-jins secert crush. But the only problem is Choi Youngjae is her brother and does not apporve.