Two men, one recently out of the army, walk a trail to a mountain. Uphill and downhill, cool breezes in the shadows of the trees, shouts from the mountaintop. They go hiking and share their regretful love stories.
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.
A romance thriller between four men and women running like a runaway locomotive toward different desires, including success, revenge, children and love. Lee Sun Woo, is a photographer and editor in magazine. He keeps a burning ambition and heartfelt desire for revenge hidden behind his warm exterior. Han Chae Rin is the CEO of a cosmetics company. She is greedy and ambitious despite her success. Park Da Som is a rising actress. She does anything for success. At the same time, she struggles to protect her son who has a rare disease. She’s internally struggling between motherhood and success, and despite her cold exterior, she truly loves her ill son. Hyun Seung Hoon, Park Da Som’s husband is an aspiring model. His life goals are: overcome poverty and failures. He dreams of succeeding in life.
Jueun and Taehoon, who lost their 6-year-old daughter Heesoo in a car accident, I live day by day without being able to escape the sense of loss. Taehoon, who couldn't see Jooeun getting ruined, At the recommendation of my friend, Junbeom, who is a program developer, I restored my daughter Heesoo to VR. The family that seemed to be looking for happiness again. Due to Jueun's strong obsession with AI Heesoo, It's getting worse.
'Jeong-seok', a public official who started a big-gaining part-time VVIP care service that costs a whopping 2 million won a week, visits a mansion in a deserted mountainous village. 'I-ppal', a senior part-timer who has the greatest idea ever, is constantly talking about it as soon as he meets him, and in the meantime, a legendary girl named 'Se-na' appears in front of him. The B-class war of the crazy people begins!
Se-jin, a high school student, becomes pregnant and gets ostracized by her family and school. While wandering the streets, she meets Joo-yeong, an experienced runaway, and tries to get an abortion with Joo-yeong's help.
At a difficult place in his marriage and career, a middle-aged man gets a shot at a do-over when he's transformed back into his 18-year-old body.
In the era of corruption, Hak-gyu sings songs and tells stories on the street with his band. One day, Hak-gyu's wife Gan-nan is kidnapped by gangsters and his daughter Cheong loses her eyesight after the incident. He decides to travel in search of his missing wife and learns that corrupted noblemen are behind the mob.
Kyung-Ho is a divorced man and has peaceful days. One day, his movie director friend Hyun-Soo appears in front of him. Hyun-Soo is active in helping Kyung-Ho get remarried. The two men decide to launch Kyung-Ho's second marriage project. Kyung-Ho takes an interest in two women: Mi-Kyung and Eun-Jung.
At his mother's 70th birthday party, Yong-nam runs into Eui-joo, who rejected him in college. When the city is engulfed in toxic gas from a terrorist attack, the two must find a way to escape using all the techniques they learned in their college rock climbing club.