Follows Joseon's greatest assassin during his journey on his deadly last mission.

At the brink of his death, the CEO and founder of an IT company's spirit gets stuck inside a smartphone and enlists the help of a young man to do favors on his behalf in exchange for 10 billion won.

Noh Ae Jeong juggles motherhood with her dreams of producing films. One day, her boss disappears - and leaves behind a giant mess for her to solve.

Heo Im is an oriental doctor, acknowledged as the best in acupuncture and moxibustion in Joseon. His success is blocked due to his low status. One day, Heo Im travels though time and finds himself in present day Seoul. He meets Choi Yeon-Kyung. She is doctor firmly believing in only modern medicine.

To combat rising violent crimes, the Police Chief asks Detective Oh Goo Tak to form a team consisting of criminals. He is currently suspended from the police force for using excessive force. He then gathers team members: Park Woong Chul who is a gangster, Lee Jung Moon who is the youngest serial killer with extraordinary intelligence and Jung Tae Soo who is a contract killer. Police Inspector Yoo Mi Young also joins the team and she tries to have these guys work as a team by dealing with them rationally and sometimes emotionally.