Those Who Cross the Line () is a South Korean television entertainment program and televised on MBC.
Season 1 was aired every Friday, starting 30 March and ending on 14 September 2018.
Season 2 was aired every Saturday, starting 16 February and ending on 23 March 2019.
Season 3 was aired every Sunday, starting 18 August 2019 and ending on 13 December 2020.
Season 4 was aired every Sunday, starting 25 April 2021 with a new master and another guest as X. It was changed to Wednesday as of 1 December 2021 and the show ended on 22 December 2021.
Overview Season 1 The program is a 20-episode series program that compares and contrasts different histories, cultures, and arts as if they resemble the two nations facing the border. It is a new concept that takes away from everyday life that can only be felt locally to a unique history. The program was originally a 16 episodes series but got extended due to its popularity.
Season 2 The second season, Those who cross the line - Korean Peninsula (), is a 6-episode series program that compares and contrasts on the history of Korean Peninsula and to commemorate the 100th anniversary of March First Movement and Provisional Government. This second season is based on the success of the first season and Seol Min-seok's wishes to visit/cross the Military Demarcation Line (MDL) as mentioned in the opening premier of the Season 2 when the five cast members met. Before visiting the MDL, the cast will learn about the history of Korean Peninsula, particularly on the topics on "Those who tried to protect their borders" from history teacher, Seol Min-seok and invited guests.
Season 3 The third season, Those who cross the line - Returns (), is the continuation with the success of the Season 2 and is to visit the hidden historical sites all over South Korea. The excitement is the journey to find the true story that cannot be learned from history books. Furthermore, it is expected that it will make a meaningful move that draws together the stories of yesterday, today, and tomorrow that we have not known yet. In addition, invited guests will visit each historical site to make the Korean history exploration more enriching and enjoyable.
Season 4 The fourth season, Those who cross the line - Master X (), is a comeback with an expanded version that crosses the history as well as various 'line of knowledge'. A new world of knowledge to be with the best masters in Korea! Who is the unknown Master X who will cross the line of knowledge every week, such as History vs Science, History vs Psychology and History vs Art.
Airtime SeasonAirdateBroadcast Start Time (KST)130 March – 14 September 2018Fridays at 9:50 pm216 February – 23 March 2019Part 1Saturdays at 6:25 pmPart 2Saturdays at 7:10 pm318 August 2019 – 13 December 2020Part 1Sundays at 9:05 pmPart 2Sundays at 9:50 pm425 April – 21 November 2021Part 1Sundays at 9:10 pmPart 2Sundays at 9:50 pm1 – 22 December 2021Wednesdays at 9:00 pm
Cast Season 1
NameEpisodeRef/NotesKim Gu-raEp. 120Ep. 120Lee Si-youngEp. 116Lee exited from the show after episode 16, as the original filming of the program was for 16 episodes, and she is filming for her new show. Due to the popularity, the program got extended as explained in episode 17 by Kim Gu-ra.
Season 2
NameEpisodeRef/NotesJun Hyun-mooEp. 16Ep. 16Moon Geun-youngEp. 16Yoo Byung-jaeEp. 16Daniel LindemannEp. 16
Season 3
NameEpisodeRef/NotesJun Hyun-mooEp. 1 – 67Yoo Byung-jaeEp. 1 – 67Kim Jong-min (Koyote)Ep. 1 – 67Ep. 1 – 67
Season 4
NameEpisodeRoleRef/NotesJun Hyun-mooEp. 1 – 32HostYoo Byung-jaeEp. 1 – 32Kim Jong-min (Koyote)Ep. 1 – 32Shim Yong-hwanEp. 1 – 32History MasterKim Kyung-ilEp. 1 – 32Psychology MasterEp. 1 – 32Science Master
Episodes Season 1
Episode #Trip #Original Airdate DateLocationGuestsRef/Notes 1 – 4 1 30 March 20186 April 201813 April 201820 April 2018 Mexico City & Tijuana (Mexico) + San Diego (United States)(20 April)Tyler RaschChristian BurgosYoo Byung-jae—No broadcast on 27 April due to special broadcast of Inter Korea Summit 5 – 82 4 May 201811 May 201818 May 201825 May 2018 Paris & Strasbourg (France) + Baden-Württemberg & Berlin (Germany)(18 May – 25 May)Cha Eun-woo (Astro)Daniel LindemannYoo Byung-jae—No broadcast on 1 June due to International Friendly soccer match between South Korea & Bosnia-Herzegovina 9 – 123 8 June 201822 June 201829 June 201813 July 2018 Amman, Jerash, Ma'in Hot Springs & Petra (Jordan) + Jerusalem & Dead Sea (Israel-Palestine)Minho (Shinee)MC Gree13 – 16420 July 201827 July 20183 August 201810 August 2018 Barcelona (Spain) + Gibraltar + Morocco & PortugalP.O (Block B)Lee Su-hyun (AKMU) 17 – 20517 August 201824 August 20187 September 201814 September 2018 Florence, Venice & Trieste (Italy) + Lake Bled (Slovenia)SolbiYura (Girl's Day)Yoo Byung-jae
Season 2
Episode #Original Airdate DateLocation/Place visitedHistorical EventsSpecial Guest(s)Ref/Notes116 February 2019Ganghwa Island () (江華 廣城堡) () (江華 三郞城) Ganghwa Peace Observatory () (江华和平观察站)1871 Korean CampaignFrench Campaign against Korea, 18661884 Kapsin Coup—223 February 2019Ganghwa County Yeunsangun's house of exile Gyodong IslandFirst Literati Purge of 1498Second Literati Purge of 1504Jungjong coup in 1506Kim Young-okKim Young-ok talk about her personal experiences in Korea under Japanese rule, Korean War andfamily reunion with her eldest brother (North Korean) whom she has not seen for 50 years (in 2000)since the start of Korean War.Jeju Island Samseonghyeol Shrine () () Jocheon Monument Street ()Tonghak Peasant Revolution—All the five cast members are together for the first time since the premier opening of the show.32 March 2019Jeju Island Songaksan (Jeju) () () Altteureu Airfield () Socotra Rock () Sanbangsan () Jeongbang Waterfall ()Beopjeongsa MovementJeju uprisingHendrick Hamel in the Joseon KoreaGo Doo-shim49 March 2019Jeju Island Jeongbang Waterfall () Yeongmowon ()Jeju uprising—Tokyo, Japan The Classic house at Asakasa Prince Hibiya Park Ichigaya Prison (Commemorative Tombstone)Triple InterventionFebruary 8 Declaration of IndependenceSakuradamon Incident (1932)Kantō MassacreChoi Hee-seo516 March 2019Tokyo, Japan Tokyo StationFive Eulsa TraitorsSeven Jeongmi Traitors8 pro-Japanese Traitors—Kyoto, Japan Koryo Museum of Art Doshisha University - Yun Dong-ju Memorial Yodo RiverEra of Imperialistic Cultural Cleansing—South Korea Cheorwon County——623 March 2019Cheorwon County Igrl-ri Labor Party Headquarter (Former North Korea building) Baengmagoji station Korean Demilitarized Zone Civilian Control Line Southern Limit Line Arrow Head Ridge Guard Post Military Demarcation LineKorean War Battle of Inchon Hungnam evacuation Third Battle of Seoul(International Political Specialist)
Season 3
Episode #Original Airdate DateLocation/Place visited/EventSpecial Guest(s)Ref/Notes118 AugustSeoul Gyeongbokgung ChangdeokgungChoi Hee-seo225 AugustBusan Taejongdae Dongnae-eupseong Imjin Warran History Museum at Suan Station of Busan Metro Line 4 Yongdusan Park (Busan Tower) Joseon TongsinsaCho Jin-woongSandeul31 SeptemberSeoul History tour Chōsen Shrine Former residence of Resident-General of Korea Mitsukoshi Department Store GyeonggyojangChoi Hee-seo48 SeptemberGyeongju National Museum Tomb of King Muyeol Tomb of General Kim Yu-sin Hwangnyongsa Tomb of Munmu of Silla GameunsaMoon Geun-young515 SeptemberSolbi622 SeptemberTongyeong, South Gyeongsang Province
HansandoKim Myung-minKim In-kwon729 SeptemberImjin War (Jinju, South Gyeongsang Province) Jinjuseong Namhae Yi Sunshin Sunguk ParkLee Jin-hyuk (UP10TION)86 OctoberBuyeo National Museum (ft. Gilt-bronze Incense Burner of Baekje and Geumdong Guanyin Bodhisattva statue) Baekje Cultural Land
Mireuksaji Stone PagodaPark Chan-hoMijoo (Lovelyz)913 OctoberPark Chan-hoHan Sun-hwa1020 OctoberEvents and history of Joint Security AreaLee Jin-hyuk (UP10TION)1127 October123 NovemberVeritable Records of the Joseon Dynasty (Odaesan, Pyeongchang) Odaesansago National History Archives WoljeongsaJeon In-hwa1310 NovemberUssuriysk Oversea Independence Movement in VladivostokChoi Hee-seo1417 November1524 NovemberJeong Yu-mi161 December178 DecemberProvisional Government of the Republic of Korea's Temporary Office Building Yun Bong-gil - Hongkew Park Bombing Kim Ku's Independence Movement in ChinaHan Go-eun1815 DecemberHan Go-eunYoon Joo-binKim Yong-man 1922 DecemberConfucian scholars of Andong (Andong, North Gyeongsang Province) Dosan SeowonJeong Yu-mi—colspan=4 style=text-align:center
Episode #Original Airdate DateLocation/Place visited/EventSpecial Guest(s)Ref/Notes205 JanuaryThe Korean Studies Institute Byeongsanseowon Confucian Academy Yi Yuksa (ft. Poetic work during Korea Independence Movement)Jeong Yu-mi2112 JanuaryJeong Yu-miLee Ok-bi (ft. ) United Nations Memorial Cemetery Yeongdo Bridge 40-step stairway (ft. the historical stairway and cultural centre)Song Hae2219 January—colspan=4 style=text-align:center 232 FebruaryNational Palace Museum of Korea249 February2516 FebruaryYi Dong-nyeong - (ft. Yi Dong-nyeong's residence & the footsteps of the 80th anniversary of the Korean Liberation ArmyHan Go-eun2623 February271 MarchIndependence movement theme at Anguk Station (ft. Korean Declaration of Independence) Cheondogyo Central Bridge Tapgol Park Seodaemun Prison History HallJeong Yu-mi288 MarchNational Hangeul Museum MBC Sangam-dong Studio (History Golden Bell) Ju Si-gyeong - Standardizing Korean Language Korean Language Society incidentDdotty2915 March3022 MarchChanguimun Namhansanseong Samjeondo MonumentKim Kang-hoon3129 March325 April - Royal tomb of the Joseon Dynasty (ft. the tomb of and ) Land PalaceJeong Yu-mi3312 April3419 AprilNamsan Literature HouseKim In-kwon3526 AprilChanggyeonggung (ft. Honghwamun (main gate) and Munjeongjeon (council hall)) Jangchungdan Park - Rowoon (SF9)Kim Kang-hoon363 May3710 MayJoseon Dynasty Special - Jeongjo Exploration Changdeokgung (ft. Buyongji and Kyujanggak)Hwaseong Fortress - (ft. Sinpoongru, Naknamheon and Bongsudang)Kim Se-jeong3817 MayKim Se-jeongPark Yeong-tak3924 MayDasan Ecological Park Chŏng YagyongJeong Yu-mi4031 May417 JuneJongmyo Shrine Heojun MuseumJun Kwang-ryul4214 JuneNamdaemun Hangang Bridge War Memorial of KoreaSung Yu-ri4320 JuneMount TapochauKim Hye-yoon4427 June455 JulyKoreans on the battlefield during the Second World War (Tinian) Sugar King Park Last Japanese Command4612 JulyJeong Yu-mi4719 July4826 JulyKorean Folk VillageAlberto MondiShin Ji (Koyote)492 AugustAncient Korean Social Class System Seongsu-dong ValleyKim Se-jeongPark Yeong-tak509 AugustMuseum is alive Special Feature National Museum of KoreaHan Ji-hye5116 AugustMassacre in Hwaseong, Gyeonggi Province Pro-JapaneseChoi Hee-seo5223 August5330 AugustYeonju flight
The beginning of JoseonChoi Soo-jong546 September5513 SeptemberConflict between the rich - villa of Heungseon Daewongun Unhyeongung - former residence of Heungseon Daewongun Gojong's new rival emerged WongudanMoon Ga-young5620 September5727 SeptemberChoi Soo-jong—colspan=4 style=text-align:center 5811 OctoberJin Se-yeon5918 OctoberSong Il-gook6025 October611 NovemberJin Tae-hyun628 NovemberGangneung (Shinsaimdang & Heonanseolheon) Hwang JiniNoh Sa-yeon6315 NovemberGoryeo military regime SambyeolchoJung Tae-woo6422 November6529 November666 December10.26 incident Yeouido Park 12.12 Military InsurrectionJin Se-yeon6713 DecemberPrincess DeokhyePark Ha-sun
Season 4
Episode #Original Airdate DateCollaborationTheme/Location/Place visited/EventGuest(s)Ref/Notes125 April 2021Psychologyrowspan=2 Between the Tyrant and the Seonggun – Yeonsan-gun vs Jeongjo Seonjeongneung – Changdeokgung – Kyujanggak Kim Kyung-il22 May 202139 May 2021ScienceThe X-Files That Changed the History of the Korean Peninsula
Goseong County (Gangwon Province) – 416 May 2021HistoryRemembrance of 18 May Chonnam National University
May 18th National CemeteryIhn Yo-han523 May 2021PsychologySpy