After Yoo Tae-man steals the machine, he inadvertently brings back a long-lost figure. Baek-joong and Sun-man meet the two men, but with a cautious guard.
Quest roles:
Kim Nam-hee(Kim Hwan-dong), Yang Hyun-min(Kim Bae-dal), Yoo Seung-Mok(Dr. Yoo In-won), Jung Seung-kil(Yoo Tae-man), Kim Tae-Hoon(Baek-jeong), Hwang Mi-young(Ju-mo), Baek Ji-Won(Soon-sim), Park Jin-young(Yoo Tae-young), Jo Hyun-Jae(Loafer)