At the beginning of the TV series, the relatives of the man died in an air crash. After losing his loved ones, the man calmly found suspicious places in the diaries of his loved ones. Facts have proved that this accident is no ordinary accident. This is an accident deliberately planned by a competitor. So the man was very angry and vowed to find out who was behind the scenes. Revenge for relatives, revenge for the innocent people on this plane.
In fact, most TV dramas in South Korea implicitly express the corruption of upper-class politics in South Korea. Really dare to shoot, not afraid of the government. The plane crash also depicts the darkness and political corruption of this society.
Few countries will shoot this kind of TV series to expose government corruption, for fear that the government will take advantage of loopholes. But South Korea often makes some TV dramas like this to satirize the government.
Moreover, the hero and heroine of this drama are not as normal as in the TV series, and there are many action scenes in it, all of which are performed by men themselves. In order to really perform tricks, they also conducted some special training and practiced shooting, which was also very hard. Because the man has served in the army before, these action scenes are not very difficult for him, but they are also very hard.