Do-ki goes into Jangsan Correctional as an undercover inmate. He fights all the way through every trap that Ha-joon has prepared for him. Although he barely makes it in one piece, he saves Lee Si-wan. Meanwhile, Ha-joon learns about his true identity and what the Bishop has done to him since his childhood.
Quest roles:
Park Jong-hwan(Park Hyun-jo), Park Ho-San(Bishop), Moon Chae-Won(Oh Mi-seo), Jeong Seung-won(Bishop's Henchman), Kim Chang-hwan(Lee Si-wan), Kim So-yeon(The First Deluxe Taxi Driver), Oh Sang-ho(Bartender), Jung Woo-young(Black Capital Staff), Kang Gu-ha(Prison Guard), Yoon Sang-ho(Bae Ki-suk), Son Jung-woo(Bartender), Lee Yo-sung(Kim Dan-woo's Father), Kim Wang-yong(Bishop Follower), Ha Young-wook(Bishop Follower), Choi Woo-gyeom(Antiques Exchange Staff)