Detective Yoon Cheo-yong was born with the supernatural ability to see, hear and touch ghosts. He solves mysterious, unsolved cases along with tough and passionate colleague Ha Sun-woo, and Han Na-young, the ghost of a high school girl.

• Oh Ji-ho
• Jun Hyo-seong
• Ha Yeon-joo
• Ju Jin-mo
• Yoo Seung-mok
• Yeon Je-wook
• Kim Kwon
• Jeong So-yeong