Bai Chu, the only daughter of General Bai, an important official in the imperial court, was granted a marriage by the emperor to Prince Chen.But Bai Chu has always been thinking about Xinyue, his childhood sweetheart who has been separated for many years.However, due to the fact that the marriage was granted by the emperor and it was difficult to disobey the emperor's order, Bai Chu could only try every means to force Prince Chen to break off the engagement after entering Prince Chen's palace.Little did they know that the marriage granted by the emperor was actually deliberately obtained by King Chen in order to compete with King Qi for the crown prince position, so he wanted to win over the power of the Bai family.On the wedding night, King Qi arranged for an assassination, and King Chen died tragically. Bai Chu's parents also died in the assassination.Overnight, she lost her love and family affection.She decided to avenge her husband and parents, so she disguised herself and entered Guigu, the killer organization under King Qi. While investigating the truth, Bai Chu was repeatedly protected by a masked man.

King Chen's shadow guard Lin Yu was assassinated by “Guigu” killers on his way back home. These killers were sent by King Chen's younger brother, King Qi, to kill King Chen in order to compete for the crown prince's position.

Unexpectedly, the scene where Lin Yu killed the killer happened to be witnessed by Bai Chu, who was climbing a tree to catch poisonous insects. Bai Chu was so frightened that he slipped and fell from the tree, but was caught by Lin Yu.After the two dealt with it skillfully, Bai Chu escaped, but Lin Yu picked up the token of the eldest lady of the Bai family.

Bai Chu was tied up and sent to the gate of the palace, and found that King Chen% was the person he met in the woods that day.Bai Chu wanted to use tricks to force King Chen to break off the engagement, but was unexpectedly tried by Lin.​

Bai Chu was sent to a remote annex of the palace. Lin Yu told her that they were just a political marriage and asked her to calm down. She was not allowed to leave the annex without orders.Bai Chu thought of a countermeasure and prepared to force King Chen to break off the engagement again.

Lin Yu went to visit Bai Chu, and Bai Chu expressed his gratitude to Lin Yu and explained that he actually already had a sweetheart, so he didn't want to marry.Lin Yu said that this matter was something the emperor had to do. When he turned to leave, he was stopped by Bai Chu. The injury on Bai Chu's shoulder was bleeding. Lin Yu took out a handkerchief to wipe it for her. Bai Chu recognized that the handkerchief was embroidered by himself when he was a child., with a bug on it, which she gave to the little boy who saved his life when she was a child.

Bai Chu was shocked, he thought King Chen was the little boy.Lin Yu also recognized Bai Chu as the little girl back then. The two looked at each other, speechless.Lin Yu thought of King Chen's words and hesitated to admit it. He denied the handkerchief and left quickly.

On the night of the wedding, Lin Yu wore wedding clothes and drank Hexin wine with Bai Chu. King Chen also wore wedding clothes and drank tea in the courtyard, waiting for King Qi to take action.King Qi's Guigu killer also sneaked into the palace during the day and ambush him under the arrangement of Guigu's housekeeper Wang Yi.

As soon as the glass of Hexinjiu was put down, Lin Yu heard footsteps outside the door. He asked Bai Chu to wait for him to come back while he went to take a look.Two groups of troops were fighting outside the door. Guigu's number one killer, Zhu Yan, took advantage of King Chen's distraction and pierced King Chen's chest with his sword.Bai Chu ran out and found that King Chen had been hit by a sword. King Chen had a token of Guigu next to him.At this time, he was told that his parents also died tragically in the house.

One year later.Bai Chu has been training in Guigu for nearly a year and became a core killer through the arena.Lin Yu continued to play King Chen and was taken into the palace by the emperor to recuperate.In order to deceive others, he stabbed himself, and the wound was in the same position as King Chen's wound.Eunuch Zhao, the spy of the King of Qi, came to pretend to visit. When he saw that his wounds had not healed yet and he was lingering on the bed, he left with peace of mind.

Lin Yu received the news that Mr. Li, who was in cahoots with King Qi, had a ledger recording evidence of corruption and perversion of law. He decided to leave the palace to find the ledger.Gui Gu ordered to kill Mr. Li and get back the account book, and Bai Chu got the task.Bai Chu went to Jin'an Tower to inform Aunt Lou of Guigu's mission. Aunt Lou told her that she must get the account book, which was an important evidence to overthrow King Qi.Bai Chu appeared in Li's house disguised as a dancer.

During a song and dance, the dancer came on stage, and the two tested each other. Bai Chu realized that the person in front of him was not Mr. Li, and Lin Yu also realized that the person in front of him was not the dancer.

The two fought, and Lin Yu pulled off Bai Chu's veil and recognized that the person pretending to be a dancer turned out to be Bai Chu.Bai Chu took the opportunity to escape by taking the drug.

Bai Chu learned from Lao Si that the secret order book was hidden in the Guigu Seal.The fourth child took the opportunity to tease Bai Chu, but Bai Chu poisoned him and sent him back. All this was seen by Lin Yu, who decided to persuade Bai Chu to leave Guigu, a place of right and wrong.Bai Chu was drinking in the other courtyard. Lin Yu appeared wearing a mask. The two exchanged blows. Lin Yu warned Bai Chu to leave Guigu and said that it was an old friend who told Bai Chu of Jin'an Tower about the secret order book., saying that he was going to steal the Guigu Seal and get the secret order book.

Bai Chu came to find Su Xichen, the young master of Guigu, and learned from him that the Guigu Seal was placed in the Secret Pavilion, and only the butler Wang Yi could enter.As night fell, Bai Chu broke through various mechanisms in the Secret Pavilion to open the box, only to find that the box was empty. At this time, the secret dart flew in, and Bai Chu's dart escaped.

Bai Chu fled all the way to Su Xichen's room and fainted as soon as he entered.Su Xichen treated Bai Chu's wound carefully. The voice of housekeeper Wang Yi rang outside the door. Su Xichen tried to stop him in every possible way. Wang Yi broke into the room and saw a person lying on the bed covered with a quilt. He suddenly opened the quilt and foundIt's Su Xichen's maid Qingqing.

Wang Cheng told Lin Yu that Bai Chu had gone to steal the Gui Valley seal. Lin Yu was shocked and rushed to Gui Valley immediately.Wang Yi issued an order to Gui Valley, and all killers must return to Gui Valley within an hour, otherwise they will be regarded as traitors.Su Xichen was worried that the injury on Bai Chu's shoulder would be exposed. At this time, Lin Yu came in and said that he would take Bai Chu out of Guigu.Lin Yu persuaded Su Xichen and took Bai Chu away.Lin Yu took Bai Chu back to the bathhouse of another courtyard to take a medicinal bath to attack the poison. Bai Chu woke up and said that he was King Chen's guard. Lin Yu told Bai Chu that Gui Gu could not go back. At this time, the Gui Gu spy outside the window issued a warning message.The sound was killed by Lin Yu.

Lin Yu brought Bai Chu the Blood Jade Pill and once again persuaded Bai Chu to leave Guigu, and told Bai Chu that he would avenge this revenge.

Bai Chu became suspicious, and she began to doubt Lin Yu's true identity. Taking advantage of his unpreparedness, she spread poison to stun Lin Yu.

When Bai Chu came to Jin'an Tower, the owner took out the key and asked her to take refuge in a small house in the western suburbs of Jin'an Tower because Gui Gu had issued an assassination order for her.

Bai Chu refused, and the poster reminded her that the injury on Guigu's shoulder was evidence of the crime. Bai Chu said that he would find a way, and that he could not withdraw because he had not avenged his revenge. After Bai Chu left, Lin Yu came out from next door and told the poster that sinceIf he can't let Bai Chu leave the Ghost Valley, then he will protect Bai Chu and help Bai Chu.

In the evening, the third child led the fourth child to the palace annex, hoping to stab Bai Chuyi with the sword in front of the fourth child and help Chuyi cover the sword wound on his shoulder.

Unexpectedly, during the fight between the three of them, Lin Yu suddenly appeared and stabbed Bai Chu with his sword, indicating that he had cut off Bai Chu's deal.Seeing that his goal was achieved, the third child took the fourth child away, but Lin Yu was accidentally poisoned by the fourth child and fell into coma.

Bai Chu recalled that when he poisoned Prince Chen in the bathhouse of another courtyard, he had seen other scars on the prince's body.

She hesitantly took off Lin Yu's clothes, and sure enough she saw the same scars on Lin Yu's body in the same position. Bai Chu felt that the person in front of him must be King Chen, and King Chen didn't want to admit his identity, perhaps because he had no choice.difficulties.

Bai Chu tested Lin Yu's identity again, but Lin Yu still answered accurately.

Bai Chu agreed to cooperate with Lin Yu to deal with Gui Gu, and the third child of Gui Gu was one of his own. It was because King Qi threatened the third child's parents that the third child did not go in time to support the fierce battle on the wedding night.Before returning to Guigu, Bai Chu asked Lin Yu to go somewhere with him.

Bai Chu and Lin Yu walked into Guigu for interrogation. Wang Yi asked aggressively, but Bai Chu answered calmly.Because she and Lin Yu had already discussed all the confessions.The injury on his shoulder was caused by Lin Yu's arrest, and the third and fourth elders could all prove it.The reason why he lives in the palace's annex is because he can assassinate King Chen more conveniently.

As for Lao Liu's death and his poison bottle, he had no reason to kill anyone and leave evidence behind, not to mention that the poison bottle had already been lost.Wang Yi asked her to expose her arms, because people who enter the Secret Pavilion will be exposed to a poisonous fragrance and red spots will appear on their arms. Only Wang Yi knows this.Bai Chu and Lin Yu were shocked.

Lin Yu came to Su Xichen's room. He found out that Su Xichen stole the Guigu Seal and was the same person who killed Lao Liu and framed Bai Chu.

After Lin Yu left, Su Xichen asked Qingqing why he wanted to harm Bai Chu when he just asked her to steal the Guigu Seal.Qingqing didn't want to implicate Su Xichen, so she sent medicine to Su Xichen while the housekeeper Wang Yilai was there, deliberately knocked over the medicine bowl, and assassinated Wang Yi on his way to change medicine, but was captured by Wang Yi instead.

In order to protect Su Xichen, Qingqing broke free from the rope and stabbed Wang Yi. Wang Yi beat Qingqing to death with a stick and got the Guigu Seal.

Su Xichen endured the heartache.Bai Chu and Lin Yu were analyzing the entire incident. Bai Chu said that because she had been testing poisons herself, the poisonous fragrance would not affect her.Lin Yu told Bai Chu that Guigu Seal was now back in Wang Yi's hands, and Su Xichen was also under house arrest.

King Qi deliberately said that it was King Chen who met Bai Chu for the first time and asked him to marry him, implying that what happened to General Bai, Mrs. Bai, and even the Bai family was all because of King Chen's personal request.caused by marriage.

King Qi used this to drive a wedge between Bai Chu and Lin Yu.Bai Chu was shocked when she learned about it. She looked at Lin Yu in disbelief. Lin Yu was panicked, while King Qi smiled proudly.

In the evening, Lin Yu went to the courtyard to look for Bai Chu. Bai Chu was silent and suddenly made a move, and the two of them fought.Lin Yu was confused and asked Bai Chu what happened. Bai Chu told him everything, saying that he knew Lin Yu was King Chen and that he had gone to see Zhu Yan.

Bai Chu accused Lin Yu of using others as pawns for his own selfish desires, which not only harmed himself, but also harmed his parents.Bai Chu lost her mind and became more and more excited as she talked. She asked what was the difference between Lin Yu's behavior and King Qi's, and stabbed Lin Yu's body with a knife.Lin Yu did not hide. Bai Chu slowly realized that he had stabbed Lin Yu and walked away crying.Wang Cheng asked Lin Yu why he didn't defend himself, and Lin Yu said that if he could make her feel better, he would.

When Bai Chu came to Jin'an Building, he told the building owner that he could make a fake death drug, so that Mr. Lu could hide the truth.Seeing that Bai Chu was worried, the poster told Bai Chu that when King Chen asked the emperor for marriage, he wanted to protect the Bai family, because King Qi was ready to kill General Bai.

General Bai sent Bai Chu to Prince Chen's Mansion before the wedding date, and later specially set up Jin'an Tower for Bai Chu because General Bai had foreseen the possibility of the incident and wanted to protect Bai Chu.

Lin Yu and Bai Chu met in another courtyard. Lin Yu asked Bai Chu to give up the order to kill Master Lu. Bai Chu refused and turned to leave, but Lin Yu held him tightly and tied his hands.Lin Yu sincerely apologized to Bai Chu and expressed that he did not want Bai Chu to be injured.

After saying that, he turned to leave but was stopped by Bai Chu. Bai Chu said that he had forgiven Lin Yu, and he knew that Lin Yu did not want her to be in danger again, but she knew that this mission was fraudulent and would never let Lin YuYu went into danger by herself. Now she is no longer the Princess Chen she used to be. This time she has to face it with Lin Yu.The two get back together.