The Korean drama - Knight Flower - tells the story of a funny search story about Jo Yeo-hwa (played by Lee Ha-nee), a widow who has been widowed for 15 years, and Park Soo-ho (played by Lee Jong-won), a guard camp officer who was born with bad luck and is about to marry a 17-year-old girl.

Zhao Ruhua (played by Li Heni) has two appearances. During the day, she is a dignified and martyr girl, and she is also the daughter-in-law of a famous scholar-bureaucrat family. She lives quietly within the walls that cannot see the outside world.At night, she would scale the walls and help others without anyone knowing.Park Soo-ho, the perfect North Korean man with outstanding martial arts and clever mind, was involved in an unexpected incident after meeting Cho Yeo-hwa, who had a double life.

Park Soo-ho (played by Lee Jong-won), Soo-ho is a handsome man with excellent work and the most popular man in the capital.He has been unlucky since he was a child. When he was looking for the reason why his father was brutally killed, he accidentally met the heroine and they searched for the truth with him.

In addition, Seok Ji-sung (played by Kim Sang-joong), Park Yoon-hak (played by Lee Ki-woo), and Yeon-sun (played by Park Se-hyun).

At the beginning of the story, the heroine Ruhua makes a gorgeous appearance. This mysterious masked man dressed all in black takes risks and comes to the casino for the sake of the poor little girl. He is angry about his gambling addiction and wants to sell off his property.The girl's father accidentally met Xiu Hao, an officer of the Imperial Guard Camp who was undercover investigation. Unexpectedly, he turned around and fell in love with her at the first meeting, and the two fell in love with each other.

After escaping from the casino, Ruhua quickly returned to the mansion. It turned out that she was the eldest daughter-in-law of the most famous family in North Korea. However, Ruhua became a widow without even meeting her husband. She has been a widow for 15 years and has been forced to suffer by her mother-in-law.Keep the ancestral hall to cultivate your moral character.

On the surface, Ruhua is a chaste and loyal girl who never leaves the house, but at night she transforms into a man in black and goes around doing chivalry and justice. In fact, Ruhua's parents died when she was young, and she and her brother depended on each other. But one day, her brother died in an emergency.The queen never came back and has not been heard from since.The sinister family elder insisted on marrying her to the left prime minister's family to gain benefits, but because her husband died on the day of the wedding, she was named a widower. She remained a widow for more than ten years. In order to protect more people who were as ill-fated as herself, sheAnd at night, he appears and disappears, acting chivalrously and righteously.

Xiu Hao, who was looking for the mysterious woman, learned that every night women would walk over walls and help poor people everywhere. He never thought that he could meet someone with the same ideas as him. Xiu Hao sincerely wanted to meet this righteous female knight; Xiu Hao also hadA sad childhood memory. He had been unlucky since he was a child. One day, a group of black-clad assassins suddenly came to his home and killed both his parents. His own life was also hanging by a thread.

One day, Xiuhao, who came to the temple to pay homage to his parents, happened to meet Ruhua who was about to go to the temple to pray for his brother. He mistakenly thought that Ruhua had been robbed. Xiuhao, who had a strong sense of justice, wanted to be a hero to save the beauty, but Ruhua fell into the embrace of love again.But Xiu Hao never thought that the woman in his arms was actually the traitor he was ordered to capture?

Xiu Hao was determined to get to the bottom of it, and he came to Ming Dao Inn with Ruhua's shoes as evidence.Although the proprietress Zhaoyun admitted that she had had contact with people wearing masks, she did not reveal Ruhua's true identity.However, Xiu Hao is extremely persistent and vows to reveal Ru Hua's true face.At the same time, Yunxue also warned Xiuhao to stay away from dangerous people.However, Soo-ho becomes more and more interested in Pil-joo because he feels like he has seen this man somewhere.

Businessman Jiang Pizhi weaves his own network of connections among high-level officials, often offering bribes in exchange for the protection of those who are corrupt.One of the high-ranking officials he firmly controlled was the notorious and extremely vain Minister of Finance Lian Xingji.The minister's atrocities were so heinous that he brutally beat an old servant almost to death because a drop of water splashed on his tiger skin painting.

After Ruhua heard about this, she was filled with righteous indignation. She sneaked into Lian Xingji's mansion and treated him in the same way.When Lian Xingji discovered that his beloved tiger skin painting had been replaced by a lifelike sketch of a giant domestic cat, his heart could hardly bear the huge blow.At this time, Xiu Hao has begun an in-depth investigation into this bizarre theft case.Eyewitness testimonies point to a mysterious woman wearing a mask, who seems to have become a key figure in the case.

Soo-ho and Yun-hak go to the temple to hold a memorial service for Soo-ho's biological parents.In a flashback, Xiu Hao's family was massacred. This bloody scene seemed to be closely connected with an event fifteen years ago.At the same time, Ruhua also came to the temple, silently praying for her brother's safe return.However, fate did not seem to favor her, and she was ambushed by bandits.

At this critical moment, Xiu Hao and Yun Xue happened to arrive at the scene.Xiu Hao bravely fought a fierce battle with the bandits.As expected, the classic plot in the TV series is repeated again. The hero rescues the heroine in danger, and Ruhua somehow ends up falling into his arms.The two gyrate in slow motion as the narrator watches.

Soo-ho discovers that the president of the Chamber of Commerce Kang Pil-jie is also looking for the painting that Yeo-hwa stole from Hu Cao Bangshu.He left a note to the masked hero at the Mingdao Inn as a warning.At the same time, Ruhua participated in a relief event with her mother-in-law and the wives of senior officials, and suddenly a child disappeared.

Xiuhao came to Mingdao Inn to repair the paintings, but accidentally bumped into the masked hero.She informs him that Kang Pil-chi has been kidnapping children in the slums.As an official of the capital's defense, Soo-ho decided to handle the matter personally and asked her to stop interfering.Meanwhile, the king and Yoon Hyuk search for members of the late king's bodyguard.

Yeo Hwa and Soo Ho find the place where Kang Pil Chi hides the kidnapped children.The two worked together to successfully rescue the children, but they had disagreements about the next steps for the children.Soo-ho advocates bringing the children to the Capital Defense Force as witnesses to Kang Pil-zhi's crime, while Yeo-hwa believes that the children should be placed in a safe place first.At this time, Hucao died unexpectedly, and his servant was arrested on suspicion of murder.

After Soo-ho learns Yeo-hwa's true identity, he begins to take measures to prevent her from making any rash moves.At the same time, Yin Hyuk discovered that Song Hu was the former king's bodyguard. He disappeared fifteen years ago after receiving the former king's secret order.In the process of searching for his brother, Ruhua unexpectedly met someone.

The king and Yin Hyuk were surprised that Ji Sung accepted Cha Sung Ho's sister Yeo Hwa as their daughter-in-law.They think Ji-sung is using her as a hostage to contain themselves.At the same time, Ji-sung invites Yoon Hyuk and Soo-ho to his home.Meanwhile, Nan Jing wants to talk to Ru Hua privately about her family situation.

Xiuhao began to investigate Nanjing's background. At the same time, Ruhua also learned from Nanjing that her brother's disappearance was related to affairs in the palace.Ruhua asked Zhixing about her brother's whereabouts, but Zhixing tried to hide the truth from her.When Zhixing secretly leaves home in the middle of the night, Ruhua decides to follow him.

Yeo Hwa learned from Yin Hyuk and Soo Ho that Ji Sung asked her to marry into his family in order to control her brother Seong Ho.In addition, Soo-ho also revealed his true identity and family background to him.They believe that Cheng Hao holds evidence of Zhi Xing's rebellion.At the same time, Jin Yu left home to go to the temple to pray for her son, while her son Shi Zheng returned home.

Jiang Bizhi failed to complete the task of killing Nanjing and tried to escape.Ji-sung decides to get rid of Yeo-hwa before she finds out more about his conspiracy.At the same time, he also threatened the king with the safety of the queen mother.At the same time, Soo-ho discovers that Ji-sung’s son Seok-jeong is back alive.

Seok Ji-sung discovers that Soo-ho is the son of the former king's guard captain, and Seok-jung asks Soo-ho to talk to him privately.Meanwhile, the king invites Ji-sung and his family to the palace to celebrate Seok-jung's return, where an unexpected guest awaits them.

Ruhua couldn't believe that her father-in-law Zhixing had actually killed Xiuhao.Kang Pil-joo also confessed that Ji-sung ordered him to murder Soo-ho and Yoon-kang's family.Although his crimes were exposed by his family, he showed no concern and even tried to threaten the king.Ru Hua went crazy with anger and decided to kill him immediately.