In 1933, when Korea was under Japanese occupation, five people in Gyeongseong are suspected to be "Phantom" spies of the anti-Japanese organization.
Sul Kyung-gu
Junji Murayama
Lee Ha-nee
Park Cha-kyung
Park So-dam
Yuriko
Park Hae-soo
Kaito Takahara
Seo Hyun-woo
Section Chief Cheon
Kim Dong-hee
Lee Baek-ho