In 2029, an elite police squad combats an anti-reunification terrorist group while another enemy lurks nearby.

Unable to remember anything about his life, a man begins regaining consciousness in a new body every 12 hours. Now, he must piece together his identity, all while evading attacks from pursuing agents and dangerous criminals alike.

Tae-sik is a so-called "Hit Man" of a gang. But after his boss dies, the gang falls apart; and during a power struggle, Tae-sik's close gang member Gi-sun is murdered. Gi-sun was like a big brother to Tae-sik so he vows revenge. With the help of the dirty cop, Detectvie Han, Tae-sik is introduced to a woman named Mae-hwa. She provides clues for the murder and the two bond over their search for the killer. But during their search, Mae-hwa asks too many questions and it rubs the wrong people the wrong way that makes her end up being in danger; and now it is up to Tae-sik to rescue her.

Oh In-sook, who goes by Gisele in the art world, is a failed artist with nothing going for her. During her shift at her part time job, she meets a cunning and canny art sales representative Jae-bum. Jae-bum believes that Gisele has the potential to become a prominent artist and decides to represent her. He and his colleague James, through their ingenious sales efforts, begin to raise the value of Gisele’s paintings, causing Gisele to gain immense fame. As she is ready to bathe in her success, she unexpectedly dies of reasons unknown shocking the art community. Jaebum sees this as an opportunity to hike the prices on his deceased client’s paintings and decides to go all-in in doing so. However, Gisele miraculously gains consciousness like the Lazarus syndrome, denting Jae-bum’s scheme. In order to save his career, Jaebum suggests to Gisele to stay “dead” and aims to strike a deal with her.