Korean Well
Episode: 4x163 | Airdate: Oct 5, 2022 (110 min)
Ha Joon-woo (Jump Rope Athlete), Kim Shin-wook (Writer), Kim Han-min (Film Director, Screenwriter), Park Eun-bin (Actress)
Episodes
A Thousand Faces
Episode: 4x164 | Airdate: Oct 12, 2022 (110 min)
Moon Sang-hoon (Actor), Jang Won-seok (Film Producer), Jeong Na-rae (Choir Conductor), So Ji-sub (Actor)
People Who Die To Live
Episode: 4x165 | Airdate: Oct 19, 2022 (110 min)
Kim Gyeol (Cockroach Man),[8] Kim Han-kyeom (Professor), Lee Hye-ri (Actress), Joo Ho-min (Youtuber)
If The Sun Rises from the West
Episode: 4x166 | Airdate: Oct 26, 2022 (110 min)
Bae Yu-jin (Model), Choi Won-ho (Stock trader, Park Tae-joon's Father-in-law),[9] Jin Seon-kyu (Actor), Lee Dae-ho (Former Baseball Player)
I Can See As Much As I Know
Episode: 4x167 | Airdate: Nov 9, 2022 (110 min)
Paul Kim (Educator), Yoo Hong-joon (University Professor, Critic), Lee Seo-jin (Actor)
Have To Do
Episode: 4x168 | Airdate: Nov 16, 2022 (110 min)
Jung Yoon (Ssireum Wrestler), Oh Se-yeon (Film Director), Lee Beom-sik (Professor), Yoo Hae-jin (Actor)
New Employee
Episode: 4x169 | Airdate: Nov 23, 2022 (110 min)
Cho Hye-seung (New Developer at Naver), Yoo Taek-geun (Tile Worker), Lois Kim (Employee at Google), Sean (Singer, Member of Jinusean)
My Research Journal
Episode: 4x170 | Airdate: Nov 30, 2022 (110 min)
Nam Yoo-jin, Bae Hye-ji, Oh Yo-anna (Weather Forecasters), Kim Boong-nyeon (Pediatrician), Son Suk-ku (Actor)
One Candle
Episode: 4x171 | Airdate: Dec 7, 2022 (110 min)
Park Jeong-ha (Survivor of the Bonghwa Mine Incident), Lee Dong-won (Producing Director), g.o.d (Boy Group)
Attention
Episode: 4x172 | Airdate: Dec 14, 2022 (110 min)
Kim Sang-gyu (Pilot), NewJeans (Girl Group), Son Woong-jung (Football Coach, Father of Son Heung-min)
Can You Do This?
Episode: 4x173 | Airdate: Dec 21, 2022 (110 min)
Oh Seung-hoon (Announcer), Class 6-1 of the Sungchang Elementary School, Choi Soo-hyuk & Kwon Ha-eun (Full Scorers of the 2023 CSAT), Kim Min-jae & Hwang In-beom (Footballers)
With God
Episode: 4x174 | Airdate: Dec 28, 2022
Jin Myeong (Buddhist Monk), Jin Kim (Protestant Pastor), Cha Paulus (Catholic Priest), Forestella (Music Group), Cho Gue-sung (Footballer)
The Scene of My Life
Episode: 4x175 | Airdate: Jan 4, 2023
Life Drama
Episode: 4x176 | Airdate: Jan 11, 2023
People With Other Talents
Episode: 4x177 | Airdate: Jan 18, 2023
Rivals
Episode: 4x178 | Airdate: Jan 25, 2023
How is This Possible?
Episode: 4x179 | Airdate: Feb 1, 2023
Maybe It's a Deity
Episode: 4x180 | Airdate: Feb 8, 2023
Soaring
Episode: 4x181 | Airdate: Feb 15, 2023
How to Fight a Genius and Win
Episode: 4x182 | Airdate: Feb 22, 2023
Great Legacy
Episode: 4x183 | Airdate: Mar 1, 2023
It's Okay
Episode: 4x184 | Airdate: Mar 8, 2023
Capacity: 100
Episode: 4x185 | Airdate: Mar 15, 2023 (110 min)
Hwang Kwang-hee (Singer/TV Personality), Republic of Korea Emergency Rescue Team[g], Yoshihiro Akiyama/Choo Sung-hoon (Mixed Martial Arts Athlete)
Lucky, Happy, Enjoy
Episode: 4x186 | Airdate: Mar 22, 2023 (110 min)
Lee Ji-sun (Professor), Lee Do-hyun (Actor), Seong-Jin Cho (Pianist)
Nameless
Episode: 4x187 | Airdate: Mar 29, 2023 (110 min)
Choe Chang-ho (Descendent of Gyeongju Choe clan), Jeon Do-yeon (Actress)
People Crossing the Line
Episode: 4x188 | Airdate: Apr 5, 2023 (110 min)
Andrés Albiol (Locomotive Engineer), Lee Jin-ah (Police Officer), Kim Yong-jin (Hanbok Designer), Sung Si-kyung (Singer)
Per Hundred
Episode: 4x189 | Airdate: Apr 12, 2023 (100 min)
Han Jeong-sook (Dietitian), Yoon Soo-bin & Jang Hye-jin (Seoul National University Hospital Pharmaceutical Department), Kim Hee-ae (Actress)
Glory Days
Episode: 4x190 | Airdate: Apr 19, 2023 (100 min)
Lee Chae-un (Snowboarder), Lee Byeong-heon (Movie Director), Lee Je-hoon (Actor)
Full of Sun
Episode: 4x191 | Airdate: Apr 26, 2023 (100 min)
Hong Yeon-jin (Artistic Swimmer & Cirque du Soleil Coach), Orbit (Science Content Creator)[h], Taeyang (Singer)
Hot Meeting
Episode: 4x192 | Airdate: May 3, 2023 (100 min)
Lee Bo-mi & Kwak Eun-jin (Korea Sings Contestants), Epik High (Hip-hop trio), Kim So-yeon (Actress)
Everyday Hero
Episode: 4x193 | Airdate: May 10, 2023 (100 min)
Lee Yu-jin (Head of Sleep Center), Kim Soo-jung (Cartoonist), Kim Woo-bin (Actor/Model)
All or Nothing
Episode: 4x194 | Airdate: May 17, 2023 (100 min)
Yoo Joon-ha (Footballer), Kim So-jeong (PD), Ryoo Seung-bum (Actor)
Apple of My Eye
Episode: 4x195 | Airdate: May 24, 2023 (110 min)
Lee Dong-kyu (Professor), Kim Hwan & Park Doo-re (Parents of quadruplets), Kang Chul-won (Zookeeper), Lee Geum-hee (Broadcaster)
Risk Everything
Episode: 4x196 | Airdate: May 31, 2023 (100 min)
Kim Woo-joo (Dance Boy), Jeong Dong-sik (Soccer Referee), Kim Yeon-koung (Volleyball Player)
Don't Give Up
Episode: 4x197 | Airdate: Jun 7, 2023 (100 min)
Karimi Anwar (Iranian Expatriate), Moon Ki-ho (Army Surgeon), Uhm Jung-hwa (Singer/Actress)
Love Dive
Episode: 4x198 | Airdate: Jun 14, 2023
Without You Knowing
Episode: 4x199 | Airdate: Jun 21, 2023
Destiny
Episode: 4x200 | Airdate: Jun 28, 2023
Nothing Can't Stop Them
Episode: 4x201 | Airdate: Jul 5, 2023
The Great Discovery
Episode: 4x202 | Airdate: Jul 12, 2023
Passion, Passion, Passion
Episode: 4x203 | Airdate: Jul 19, 2023 (100 min)
Han Ho-yong (Home Shopping Mukbang Model), Kim Hyun-sook (Korea Sings Contestant), Jung Myeong-won (Daegu District Prosecutor's Office), Joo Hyun-young (Actress)
The Fixer
Episode: 4x204 | Airdate: Jul 26, 2023 (100 min)
Lee Jung-tae & Oh Eun-seok (CEOs of Geekble), Cho Byung-young (Professor), Namkoong Min (Actor)
I Can Hear Your Voice
Episode: 4x205 | Airdate: Aug 2, 2023 (100 min)
Sohn Sang-mo (Astronomer from Space Telescope Science Institute), Ahn Dae-sung (Vocal Therapist), Lim Ji-yeon (Actress)
That's My World
Episode: 4x206 | Airdate: Aug 9, 2023 (100 min)
Min Si-woo (Child Poet), Seo Ryeo-kyung (Doctor/Boxer), Lee Byung-hun (Actor)
Irreplaceable
Episode: 4x207 | Airdate: Aug 16, 2023 (90 min)
Heo Joo-haeng (Beekeeper), Bae Soo-hyun (Cheerleader), Hwa Ji-ye (Youtuber), Kim Hee-sun (Actress)
Disarm
Episode: 4x208 | Airdate: Aug 23, 2023 (100 min)
Kim Ki-woong, Kim Kang-yeon & Kim Taek-yeon (Elementary School Teacher and Students), Angela Sen (Cognitive Behavioral Psychotherapist), Lee Dae-woo (Police Chief Superintendent of Seodaemun Police Station), Jung Yu-mi (Actress)
Last Signal
Episode: 4x209 | Airdate: Aug 30, 2023 (100 min)
Kim Hwi-woo (Student), Yoon Soon-jin (Professor / Environmental Risk Expert), Cho Young-min (Professor / Diabetes Expert), Lee Joon-gi (Actor)
Shaking the World
Episode: 4x210 | Airdate: Sep 6, 2023 (90 min)
Cheon Jong-won (Boulderer), Shin Eun-su & Cho Yong-in (Developers of Terrorism Alert Application Terrorless), Kim Ki-ho & Park Soo-young (Gold Foil Decorators), V (Singer, Member of BTS)
When That Day Comes
Episode: 4x211 | Airdate: Sep 13, 2023 (90 min)
Cho Sun-mi (Professor), Kim Jung-min & Kim Ja-hee (Owners of Starlite Deli), Gang Dong-won (Actor)
The Strong
Episode: 4x212 | Airdate: Sep 20, 2023 (90 min)
Kim Ye-bin, Park Ji-sol & Hong Yeon-woo (Members of Little K-Tigers), Seo Seung-ho & Cho Young-seok (Lotte World Tower Outer Walls Specialists), DEX/Kim Jin-young (Television Personality), Kim Nam-gil (Actor)
Chuseok Special
Episode: 4x213 | Airdate: Sep 27, 2023 (90 min)
Pak Se-ri (Retired Golfer), Yoon Do-hyun (Singer-songwriter, vocal of YB)
You Can Do It!
Episode: 4x214 | Airdate: Oct 11, 2023 (90 min)
Lee Da-seul (Voice Actress), Oh Sang-woo (Professor/Obesity Expert), Yang Jae-hoon, Lee Ho-joon, Kim Woo-min & Hwang Sun-woo (Swimmers), Oh Jung-se (Actor)
A Bright Sunrise Day
Episode: 4x215 | Airdate: Oct 18, 2023 (90 min)
Koo Hee-ah (Korea Sings Contestant), Kim Kwang-woo (Professional Gamer), Kim Seong-mok (Weather Forecaster), Shin Hye-sun (Actress)
Practical Battle is Powerful
Episode: 4x216 | Airdate: Oct 25, 2023 (90 min)
Shin Yu-bin (Table Tennis Player), Yoon Doo-yeon (Fireworks Designer), Yoo Byung-jae (Television Personality) & Yoo Kyu-seon (Manager of Yoo Byung-jae), Hwang Sun-hong (Manager of the South Korea national under-23 football team), Paik Seung-ho, Um Won-sang & Son Min-kyu (South Korea national under-23 football team players)
Fateful Meeting
Episode: 4x217 | Airdate: Nov 1, 2023 (90 min)
Lee Hyo-chul (Internet Personality/Slickback Expert) & Cheon Ae-jung (Mother of Lee Hyo-chul), Park Jin-young (Founder of JYP Entertainment) & Bang Si-hyuk (Founder of Big Hit Music & Hybe Corporation)
The King Has Appeared!
Episode: 4x218 | Airdate: Nov 8, 2023 (90 min)
Seo Yong-sang (Baker), Kim Yong-man (Owner of Kim's Video and Music), Lee Eun-young & Kim In-hwan (Employees of Samsung Electronics), Choi Soo-jong (Actor)
Super Save
Episode: 4x219 | Airdate: Nov 15, 2023 (90 min)
Kim Ji-yoon (Professor/International Affairs Expert), Koo Cheol-soo (Teacher), Kim Ha-seong (Baseball Player), Im Soo-jung (Actress)
With All My Strength
Episode: 4x220 | Airdate: Nov 22, 2023 (90 min)
Seo Joo-hyang (Tightrope Walker), Oh Ji-hwan & Im Chan-kyu (Baseball Players), Yoo Yeon-seok (Actor)
Appears Before My Eyes
Episode: 4x221 | Airdate: Nov 29, 2023 (90 min)
Yang Young-chul (Professor/Health, Environment & Safety Expert), Seo Young-gab (Bodybuilder), Kim Ji-yoon (Professor/International Affairs Expert), Ha Ji-won (Actress)
Persistence
Episode: 4x222 | Airdate: Dec 6, 2023 (90 min)
Lee Jin-hyung (Professor at Stanford University), Kim Rok-ho (Director of World Health Organization Science Department), Ahn Eun-jin (Actress)
The Widest Road is Always in My Heart
Episode: 4x223 | Airdate: Dec 13, 2023 (90 min)
Kim Jung-ja (Eldest College Scholastic Ability Test Taker), Song Tae-wook (Police Officer), Park Seo-joon (Actor)
Gift from Santa Claus
Episode: 4x224 | Airdate: Dec 20, 2023 (90 min)
Lee Chae-hyun & Kim Ye-hwa (Daejeon Girl's Commercial High School Graduates), Yoo Eui-bae (Priest), Faker (Professional League of Legends Gamer)
Happy Ending
Episode: 4x225 | Airdate: Dec 27, 2023 (90 min)
Suh Jin-kyu & Cho Sung-ah (Mother & Daughter / Formerly of United States Forces Korea and Harvard University), Kim Chang-ok (Speaker/Communication Expert), Jang Na-ra (Actress, Singer)