Director
Screenwriter
Main Role
- Jang Dong Yoon Main Role
- Krystal JungSon Ye RimMain Role
- Yoon ParkSong Min GyuMain Role
- Lee Hyun WookLee Joon SungMain Role
- Moon Jung HeeKim Da JungMain Role
Support Role
- Choi Yoon JeJoo Moon Cheol [Polaris Special Mission Unit]Support Role
- Lee Ha YulPark Ki Hyung [Polaris Special Mission Unit]Support Role
- Yoo Sung JooLee Hyuk [2019]Support Role
- Choi Deok MoonHan Dae Shik [2019]Support Role
- Yeon Woo JinCho Min Guk [1997]Support Role
- Lee Soon WonCheon Min Jae [Villager]Support Role
- Park Da YeonCheon Soo Young [Da Jung's daughter]Support Role
- Kim In WooDr. Baek Won Chul [Health center director]Support Role
- Kim Ho JungYong Hee RaSupport Role
- Yoon Young MinMoon Ji Won [Lab director]Support Role
- Kim Yong HeeKim Ho Joon [Colonel]Support Role
- Jung Da WonNurse ChaeSupport Role
- Oh Je GeunOh Jae Shik [Village Chief]Support Role
- Son Young Sun[Grandmother]Support Role
- Seo Byuk JoonSeo Baek Jun [Military Dog Handlers Group]Support Role
- Lee Tae YoungSgt. Choi Bong RakSupport Role
- Kim Tae GeunChoi Ki SukSupport Role
- Lee Dong JooHong Do HoonSupport Role
- Choi Seong HyukShin Yoon GilSupport Role
- Lee Do Yup[Hee Ra's brother]Support Role
- Hong Eui JoonLee Hyuk [Young]Support Role
- Ho YoonLim Min WooSupport Role
Guest Role
- Lee Ga KyungRi Kyung Hee [Defector] (Ep. 1)Guest Role
- Kim Han JongKwon Hyuk Ki [Military Dog Handlers Group] (Ep. 1)Guest Role
- Lee Dong Kyu[North Korean soldier] (Ep. 1, 7)Guest Role
- Lee Kyung MinCorporal Oh (Ep. 1-2)Guest Role
- Jung Dong GeunKang Chang Hee (Ep. 2, 7)Guest Role
- Kim Jung Soo[Audience member] (Ep. 2)Guest Role
- Choi Yoon Bin[Thug] (Ep. 2)Guest Role
- Han Sang Jo[Museum thug] (Ep. 2)Guest Role
- Jin Shi WonLt. Baek Won Chul [Young] (Ep. 2)Guest Role
- Kim Do Shin[Medical examiner] (Ep. 2, 7)Guest Role
- Lee Jae In[Baek Jun's father] (Ep. 5)Guest Role
- Lee Ji Hyuk[Hyuk's secretary] (Ep. 6-7)Guest Role
- Joo Young Ho[North Korean soldier]Guest Role
- Ha Seung YounReporter Kim Yoo Ho (Ep.2, 8, 9)Guest Role
- Kim Jang Hwan[Host]Guest Role
- Kim Sung Joon[Audience member] (Ep. 2)Guest Role
- Park Tae San[Operation Sector 21 soldier] (Ep.9-10)Guest Role
- Jang Jae HaYong Dong Jin [Young](Ep. 9)Guest Role
- Kim Joo Eun[Countryside kid]Guest Role
- Lee Su MinPrivate Kwon (Ep. 1)Guest Role
- Na Joo HoBae Seung Hyun (Ep. 10)Guest Role
Bit part
- Cha Ji Hyuk[Operation Sector 21 soldier] (Ep.9-10)Bit part
Unknown
- Na Jun Unknown
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