Kwon Na Ra

Cursed since birth and exempt from death, a revenge-driven immortal sets out on a quest to reclaim his soul and end a 600-year-old vendetta.

On the first day of attending his new high school, Park Sae Ro Yi punches his classmate Jang Geun Won, who was bullying another classmate. The bully's father runs restaurant business Jagga where Park Sae Ro Yi's own father works. CEO Jang Dae Hee demands to Park Sae Ro Yi that he apologizes to his son, but Park Sae Ro Yi refuses. Because of his refusal, Park Sae Ro Yi gets expelled from school and his father gets fired from his job. Park Sae Ro Yi's father dies in a motorcycle accident caused by his Jang Geun Won. Burning with anger, Park Sae Ro Yi viciously beats Jang Geun Won. He is arrested and receives prison time for violent assault. Park Sae Ro Yi decides to destroy the Jagga company and take revenge upon CEO Jang Dae Hee and his son Jang Geun Won. Once Park Sae Ro Yi is released from prison, he opens a restaurant in Itaewon, Seoul. Jo Yi Seo, who is popular on social media, joins Park Sae Ro Yi's restaurant and works there as a manager. She has feelings for Park Sae Ro Yi.

Set towards the end of the Joseon era, Sung Yi-Gyeom placed first in the state examination and he now works at the Hongmungwan. He doesn't have a goal or ambition for his life. One day, Sung Yi-Gyeom is caught gambling. As punishment, he is assigned to work as a secret royal inspector. His job is to eradicate illegal acts and corruption by public officers. He carries out his new job with the help of Hong Da-In and Park Chun-Sam. Hong Da-In is a female inspector and solves cases with Sung Yi-Gyeom. Park Chun-Sam is Sung Yi-Gyeom's servant. Park Chun-Sam is talkative, affectionate, and tearful. Meanwhile, Sung Yi-Beom is Sung Yi-Gyeom's younger stepbrother. His father is a nobleman, but his mother is a slave. Due to his mother's low social status, his father does not accept him as his real son and he is barred from having certain opportunities. He opposes his older stepbrother Sung Yi-Gyeom.

An ace doctor in a university hospital is wrongfully accused of a medical malpractice incident and gets ousted from the hospital. He then applies to work at a prison, where he plans to make personal connections with all the big shots in prison with the ultimate goal of getting revenge against the hospital that kicked him out.

Noh Ji Wook is a prosecutor in the Central District Prosecutors' Office who ends up switching professions to a private attorney. He harbors a trauma stemming from an event in his childhood involving his parents and his first love. Eun Bong Hee, a Taekwondo athlete in her youth, is a prosecutor trainee who has become a murder suspect. Eun Bong Hee and Noh Ji Wook both find themselves being the focus of a killer.