"여기 빌려주는데 맞죠"

위기에 빠진 도기와 장대표 그리고 고은, 최주임, 박주임까지. 교구장이 만든 거대악을 무너뜨리고 모범택시 멤버들을 구하기 위한 도기의 마지막 사투가 펼쳐진다.

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.

陷入危機的四人，道奇將展開擊倒主教大人，並解救成員們的背水一戰。