After an arduous night, Baek-joong and Sun-man meet with Dr. Yoo's old lab assistant. Back in the office, they discover someone's been after their machine.
Quest roles:
Kim Nam-hee(Kim Hwan-dong), Yoo Seung-Mok(Dr. Yoo In-won), Jung Seung-kil(Yoo Tae-man), Min Sung-Wook(Manager Kim), Park Jin-young(Yoo Tae-young), Jeon Sang-hyeob(Researcher), Wang Jong-geun(Jong-geun)