North Korean criminal police officer Lim Chul-ling (Hyun Bin), a North Korean criminal police officer from a special elite force, loses his wife and comrade-in-arms during an investigation into a criminal organization that counterfeits paper money. As he continued to investigate the whereabouts of the copper plates of the papermaking, he discovered that the leader of the underground organization, Cha Qicheng, was hiding somewhere in South Korea. In desperation, the North Korean side first proposed to the South Korean government an invitation to "jointly assist in the search", and Chol-ling, who was in charge, was naturally sent to Seoul to perform official duties. On the other hand, the South Korean government, which suspects North Korea's ulterior motives, plans to preemptively capture Cha Qicheng. This matter was handed over to Jiang Zhentai (Liu Haizhen), a "mixed rice bowl type" criminal police officer who was in the middle of the punishment. Jiang Zhentai pretends to assist Zhe Ling in the investigation, but in fact closely monitors Zhe Ling. One is The North Korean criminal policeman Lin Chul-ling, who wants to complete the task, and the other is the South Korean criminal policeman Kang Jin-tae, who wants to obstruct the North Korean criminal police from completing the task. In just three days, an impossible task begins to unfold...
On the streets of south Korea's downtown, there lives a taciturn and obedient man, Ji Dong-chul. He worked as a substitute driver and was accustomed to seeing the blank stares and insults of others. The real him was a former member of the Special Forces who had escaped from North Korea, willing to abandon everything in order to track down the murderers of his wife and children.
In North Korea, he received the weight of the highly respected President Park, who knew that the chairman was killed one night, and the old man gave his glasses to Dong Chul before he died. Dong Zhe, who became an important suspect in this case, was involved in a series of whirlpools full of killing and conspiracy, not to mention that there was a big secret hidden in the glasses...
The framed pursuit of Do-hoon (Yoo Seung-yong) is rushed to the hospital due to a car accident, and wakes up to find the fact that he was framed, and his attending doctor, Tae Joon (Lee Jin-wook), is suddenly and strangely attacked from that day, in order to save his kidnapped wife, Tae Joon and Do-hoon join hands to start a dangerous escape and chase. On the other hand, the female criminal policewoman Yingzhu (Jin Sung-ling), who keenly senses the conspiracy behind the incident, and Song Banchang (Liu Junxiang), the leader of the wide-area search team with a 100% reporting rate of prisoners, also intervene in this incident, and together stage a thrilling pursuit of the journey...
The seemingly ordinary hardware manufacturing company is actually a cold and ruthless killing company like copper metal. Chi Jiong-do (Su Zhi-seop), although he wears suits and shoes all day, is a professional killer with outstanding performance in the company. He has served the company for ten years, without a single misstep, and has already honed his cold-blooded temperament and murderous heart without blinking. But when he meets a newcomer Hoon (Jin Tongjun), who comes to the company to "work", he suddenly sees his own shadow. While on a mission with Xun, Jiong-do had a momentary trance. Through communicating with Xun's family, he feels the warmth of affection more and more, and his professional sensitivities change when he meets his beloved woman. After an unexpected misstep, he was even more reluctant, but things were far from being as simple as he thought. While dreaming of an ordinary life, Chi Jiongdao has also become a "target" for his former colleagues to hunt down...
Kun (Zhang Dongjian) is a cold-blooded killer living alone in unfamiliar American land, and one day, a bullet changes everything. Kun made mistakes that he shouldn't have made while obeying the orders of the organization and performing the task of removing the target person, and he has lived in deep guilt ever since. At the same time, the organization gives Kun another order, which is his last mission, in order to find the target character Twilight (Kim Min-hee), and travel to Korea, the country where he abandoned his mother. Twilight has lost her husband and children, cared for her mother, suffered from Senile dementia, lives in despair every day, and relies on alcohol and drugs to sleep after losing her daughter, unaware that she has been involved in a huge and dangerous conspiracy. At this moment, can the man Kun standing in front of her tell her the truth hidden behind her daughter's death as she wishes...