Ji-O has a special power and a secret, but he doesn't know who he really is. He is chased by mysterious figures, while he tries to find answers to numerous questions that surround him. Goo-Reum is a detective. When she decides on a course of action, she won't change no matter what. Her parents disappeared when she was only a young child. Goo-Reum chases after the truth behind her parents' disappearance. She meets Ji-O and her life changes.
Kim Rae-won
Lee Da-hee
Kim Sung-oh
Kim Sang-ho
Jin Kyung
Park Hyeok-kwon
Ahn Nae-sang
Jeong Da-eun
Han Kyu-won
Kim Min-gwi
Go Jin-Soo
Moon Jung-dae
Lee Jung-ok
Ahn Chang-hwan
Lee Hae-yeong
Hwang Jae-yeol