In 1933, when Korea was under Japanese occupation, five people in Gyeongseong are suspected to be "Phantom" spies of the anti-Japanese organization.
Key credits listed on this page include Lee Hae-young, Lee Yoon-ho, Park Jeong-hui, Mai Jia, Sul Kyung-gu, Lee Hanee, Park So-dam, and Park Hae-soo.