Episode 1 - Six Statues of Margaret Thatcher - Chinese student and his wife Mary are preparing to face the biggest challenge in life - becoming parents for the first time. However, this does not bring a happy ending. Mary replaces SherlockBlocked a shot and died.

In the second episode - The Lying Detective - the new villain Culverton Smith appeared. Culverton Smith smiled eerily and said: “The best way to destroy your good friends is to tell them your most importantDark secrets.”

And Cullverton Smith is even worse than Magnussen and Moriarty.

In the third episode - the final puzzle - in order to save his friend, Sherlock's rewritten memory was painfully evoked, and he found and saved his sister.

In a quiet corner of London, Watson and Mary's family welcomed a new life - their lovely daughter Rosa.They invited Sherlock as their godfather. However, during the baptism process, Sherlock seemed absent-minded, only sending and deleting messages, which made Watson and Mary feel a little confused.

Meanwhile, a video call came in from David's son Charlie, who insisted that David take photos of the family's car, despite the spotty signal.A week later, a car crashed into Charlie's car, causing an explosion and Charlie's body was found inside the car, more than a week after his death.This bizarre case aroused Sherlock's great interest.

Sherlock discovers a photo of Thatcher, Britain's only female Prime Minister, in David's home, which arouses his vigilance.He intuitively believed that this photo was inextricably linked to the upcoming case.Through investigation, Sherlock discovered that a burglary had occurred at home, and the broken statue was a key clue.

After some reasoning, Sherlock revealed the truth: Charlie wanted to give David a surprise, but died accidentally.The conspiracy behind this is far more complicated than it seems.Sherlock begins an in-depth investigation, trying to uncover the truth hidden behind it.

During the investigation, Sherlock found his brother Mycroft and asked about the relationship between Moriarty and Thatcher.He had a premonition that something was about to happen, and it all seemed to have something to do with Mary.

At this time, Jinlis approached Sherlock, hoping that he could help solve a case.Sherlock had already told everything he wanted to know before Kinlis could speak.Kinliss was surprised by Sherlock's insight, but also regretted his wife's departure.Sherlock tells him that his wife left because of his harsh tone.

The police officer delivers a statue that arouses Sherlock's suspicion, and blood is found on it.Sherlock and Watson found the hacker Toby who had helped him, hoping that he could provide technical support.At the same time, Sherlock also invited Mary to participate in the investigation, and they took Toby to search for relevant evidence.

Greco found the clue between the statue and Thatcher, while Sherlock was always paying attention to the Black Pearl incident.While waiting for the murderer by the pool, Sherlock was pushed into the pool by the murderer and tried to drown him.After a fierce fight, Shylock successfully escaped the murderer, but found Agra's note the moment he broke the statue.It's all about Mary, and Sherlock is determined to protect her.

However, things develop beyond Sherlock's expectations.Mary left a letter to Watson and left without saying goodbye. She came to Tehran, Iran, by rolling dice.Sherlock follows, hoping to find Mary and solve the mystery.In Dehradun, Sherlock, Watson and Mary reunited. However, the appearance of Ajie broke the warm atmosphere.

Ajay and Mary faced each other with guns, and Sherlock learned from their conversation that the betrayer was an Englishman.In order to uncover the truth, Sherlock meets Mu from the private assassination organization at the London Aquarium.Ammu said she was tired of it all and just wanted peace, just like Mary.However, Mary firmly disagreed with Amu's request.

During the tense confrontation, Amu picked up a pistol and pointed it at Mary.Sherlock takes decisive action and reveals Amu's true identity.Faced with an inescapable situation, Ammu had no choice but to shoot at Sherlock, but Mary blocked the shot for Sherlock.With Mary's sacrifice, Sherlock and Watson were able to escape from danger.

However, Mary's death brought great sorrow to Watson, Sherlock and Mrs. Hudson.While sorting out Mary's belongings, Sherlock and Mrs. Hudson accidentally discovered Mary's suicide note.In her suicide note, Mary asked Sherlock to save Watson.

Mary's death caused irreparable pain to the two of them, and their relationship became complicated and delicate.

Watson's hallucinations become a part of his daily life, as if Mary is still with him.This hallucination not only deepened his longing for Mary, but also intensified his misunderstanding and resentment towards Shylock.Believing that Shylock was the cause of Mary's death, he chose to cut off contact with him and seek help from a psychiatrist.

Sherlock, on the other hand, fell into substance abuse and his mental state deteriorated.When Smith's daughter, Faith, found him, he tried to avoid her pleas for help, using the excuse of being busy.However, before Faith leaves, Sherlock suddenly realizes her plight and spends the night with her.This brief relationship made Sherlock realize that Faith was also influenced by Smith and became his victim.

As the story develops, we discover that Smith's goals are much more than that.Sherlock is horrified that he plans to kill anyone.In order to expose Smith's crime, Sherlock did not hesitate to reveal his identity on his blog, and even filled his room with photos of him, beating him with guns to vent his anger.

With Watson's help, Sherlock gradually got rid of his psychological dilemma, and the relationship between the two was repaired.However, with the appearance of Smith, their lives were once again in danger.Not only did Smith attempt to kill Sherlock, he confessed to his crime and expressed his obsession with killing.

At this critical moment, Watson arrived in time and rescued Sherlock who was choked by Smith.Sherlock's wit allowed him to install a recording pen in the crutch sent by Watson in advance, and successfully recorded Smith's confession.After the matter was resolved, Sherlock realized that Faith who came to him before was just an illusion, and the real Faith was a strange woman.

The climax of the story reveals that Smith's fake daughter was actually a psychiatrist in disguise, and her true identity turned out to be Sherlock's sister Euros.The appearance of Eurolos made everything confusing. She raised her pistol and shot at Watson, making the whole story fall into a greater mystery.

Mycroft was watching the movie intently. At the climax of the plot, the picture suddenly became unstable and the movie was interrupted.A strange voice echoed in the silence, repeating the strange prophecy that the east wind has arrived.Immediately afterwards, an exaggeratedly dressed clown rushed toward Mycroft brandishing a sword.Mycroft hurriedly took out his pistol, only to find that the bullet was missing.He tried to escape toward the door, only to find it locked.At this critical moment, Sherlock appears like a phantom, revealing a surprising fact: he has a sister named Eurolos.

Afterwards, Mycroft hurried to Sherlock's residence and told him and Watson about Eurolos' past.Eurolos, who has shown extraordinary intelligence since childhood, is known as a genius rarely seen in a century.Her brain is extremely developed and she can foresee fragments of the future. However, her ability also comes with devastating consequences.In one out-of-control prophecy, she predicted a catastrophic fire that actually caused the house to burn down.In order to protect his sister, Mycroft sent her to Sherlingford for secret detention and lied to her parents that she was dead.After hearing this, Sherlock still had no impression of this sister.

Suddenly, a drone flies over carrying a missile. As long as it moves within three seconds, the missile will detonate.Sherlock and Watson are forced to escape by jumping out of the window, while Mycroft escapes with Mrs. Hudson.During their escape, Sherlock and Watson cleverly disguised themselves as pirates, hijacked a ship, and successfully arrived at Sherrinford's island.After the warden learned of the situation, he immediately reported it to Mycroft, but Mycroft had already taken the lead and came to Sherrinford in person.After many tests, Sherlock finally met his sister Eurolos. However, Eurolos suddenly took action and knocked Sherlock unconscious.Watson and Mycroft witnessed the video of Eurolos manipulating people's hearts. Watson suddenly realized that the warden and the entire prison had been controlled by Eurolos.

Neither Watson nor Mycroft could take action, and the warden had no choice but to commit suicide, but Oros still killed the warden's wife.Then Eurolos asked Sherlock to deduce who was the real murderer of the shooting. Even if Sherlock's guess was correct, Eurolos did not let go of the remaining two innocent people.Eurolos also lied that he had planted a bomb in Jasmine's room, and that the bomb could only be deactivated if Jasmine said “I love you”, which caused great harm to Jasmine.Sherlock cheered up with Watson's encouragement.

Eurolos asked Sherlock to choose one of Watson and Mycroft to keep, and the other must be killed.In desperation, Sherlock wanted to end his life, but Eurolos stopped him.Watson is trapped in the well, and Sherlock realizes that it is not a wall that traps him, and when he pushes it open, he discovers that it is his own manor.Euros releases water to drown Watson, and the plane is about to crash.Only then did Sherlock remember that when he was a child, the person Eurolos hid was not a dog, but his good friend.Sherlock ran to the cemetery to look for clues and try to figure out the answer.It turns out that Eurolos was afraid of being alone and having no one to play with her, so she did such a thing.Sherlock comforts Euros and asks her to tell him how to save Watson.The little girl on the plane was Eurolos herself. Finally Eurolos was sent back to Sherlingford, and Sherlock often stayed with her from then on.