This drama focuses on the life of Jung Yak Yong, a gifted scholar from Joseon who also had a keen eye for investigation.

It relates a time-slip story which takes Jung Yak Yong, known as Dasan, one of the greatest thinkers in the later Joseon period, from the past in 1818 to the present in 2022, as he becomes elected as the 20th president of the Republic of Korea. Jung Yak Yong was a Korean agronomist, philosopher, and poet. During his time, he wrote highly influential books about philosophy, science and theories of government and held significant administrative positions.

It relates a time-slip story which takes Jung Yak Yong, known as Dasan, one of the greatest thinkers in the later Joseon period, from the past in 1818 to the present in 2022, as he becomes elected as the 20th president of the Republic of Korea. Jung Yak Yong was a Korean agronomist, philosopher, and poet. During his time, he wrote highly influential books about philosophy, science and theories of government and held significant administrative positions.

Operating under the alias Yong-pal, a surgeon gets enmeshed in a dark conspiracy involving a chaebol heiress forcibly put in a medically induced coma.

Jeong-sun as her name lives an uncluttered life with modest behavior even though working at a food factory. Young-soo, a factory colleague, approaches her. As they get closer, they enjoy their secret relationship, and he takes candid shots in beds with his mobile camera. One day, she gets inappropriate stares from others.

Plew, a professional killer, comes back to Thailand to find out who killed his father. He is forced by Bunpot to kill Slavut, but instead he accidentally helps Slavut get away. While on the run from Bunpot, he meets Jack; they decide to get out of the country. Later they come back to help one of his best friends and kill Bunpot and all of his men.

Donghak Rebellion (Donghak Peasant Movement) takes place in Hongjuseong (now Hongseong). Manhae, a boy who participates in the Donghak Rebellion as a 16-year-old, steals 1,000 nyang and sends it to military funds. At the age of 55, at Simujang in Seongbuk-dong, Manhae remarried while staying in a boarding house. While making a living by sewing his wife's wages, Manhae continues to resist Japanese imperialism by participating in the movement against the name change of the Chang clan and against the dispatch of Korean student soldiers along with writing. He takes over the military funds from Madam Baekhwa of Myeongwol in Yongjing. Lee Hwa-yeong hands over the military funds with Man-hae. In 1944, Manhae passed away at the age of 66. As the poem "Your Silence" flows, Manhae's achievements are introduced as highlights, and his subtitles flow.

About the assassination attempts on Emperor Jeong Jo's life during the 8 day period when he left the palace for a ceremony to honor his father who was killed by his grandfather.

Chun-bo and Bong-dal are members of a bandit who voluntarily claim to be Im Kek-jeong's subordinates. They didn't even know that there was a horse plaque on the clothes of the fishermen, and they were yangban and decided to play the role of a real female haenger. They perform good deeds such as scolding Tamgwan-duck for the unfair and powerless people and distributing grain to poor residents.

A film about a South Korean actress who has been involved in many political activities under President Park Chung-hee's rule. Ch'a Hong-gi persuades Kim Hyong-uk, the former KCIA director to expose the corruption of President Park Chung-hee in a book. After Kim's death, Hong Yong-ja suspects the South Korean government of being involved. She eventually becomes a vice president of International Taekwondo Federation by the help of Ch'a Hong-gi.