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In 1997, a mysterious ghost saved humankind and then disappeared. The mysterious ghost appears again 24 years later and helps a serial killer escape. Kim Sae-ha, Jung Sae-byeok and Song Eo-jin pursue the ghost for different reasons.
Season 1
Cast
Seo Kang-joon
Kim Sae-ha
Kim A-joong
Jung Sae-byeok
Lee Si-young
Ghost
Kim Moo-yul
Song Eo-jin
Jang So-yeon
Choi Sun-wool
Kim Sung-kyun
Kim Ma-nok
Heo Joon-seok
Im Ji-Yoo
Lee Gyu-hoe
Han Wi Han
Song Sang-eun
Chae Jong-Yi
Kim Hyeong-mook
Jo Heung-Shik
