In Part 1, Woo Jin and Jeong Yeon witness what is supposedly a suicide and from the body of the victim comes out a blue bug. They cut it open to find that it’s a microrobot. In Part 2, Joon Hyeok almost catches Bluebird, but he fails as Ho Soo interferes. Ho Soo shouts out that he doesn’t want to remember, and Joon Hyeok says he doesn’t remember anything, so he doesn’t know who he is.
Yeo Jin-goo
Kim Woo-Jin
Kim Kang-woo
Kim Joon-Hyuk
Gong Seung-yeon
Han Jung-Yeon
Lee Gi-kwang
Lee Ho-Soo
Kwon Hyuk-soo
Detective Oh
An Woo-yeon
Kim Beom-Gyoon
Kim Joong-ki
Kim Kyu-Cheol
Min Sung-wook
Lee Hyun-Seok
Nam Myung-ryeol
Yoon Hak-Joo
Lee Hwa-Kyum
Secretary Shin
Seo Hyun-chul
Hong Jin-Hong
Song Young-gyu
Hwang Yong-Woo
Oh Eui-sik
Lee Dong-Soo
Kim Ye-joon
Kim Bum-gyun (young)
Jung Ji-hoon
Kim Woo-jin (young)
Jung In-sun
Park Min-young
