He is the leader of the troubled times who controls the underground world, and she is the inheritor of national martial arts who has a blood feud and hides in the dark. In a plot, he took her as the sharpest knife in his hand and asked her to cut through the thorns in the road ahead. In order to find out the truth about the family's destruction, she endured and lay dormant, and was willing to use a sharp knife. This was a dangerous game that started with coercion and exploitation, until a foreign enemy brought a martial arts master to knock on the door, insulting our country's martial arts and violating our mountains and rivers. The two people were forced to depend on each other. In the face of life and death and the righteousness of their family and country, the two people forged a bond that transcended control and hatred. When the secret love is intertwined with the hatred of the country and the family, where will this imprisoned sharp blade go?
