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In Part 1, Dong Geon and Human B join hands and try to come up with a plan to get Woo Jin and Jeong Yeon. In Part 2, Jeong Yeon and Joon Hyeok go to Human B to find Woo Jin after finding out that their supercomputer won’t work without Woo Jin. However, the supercomputer crashes.
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