London, England: A mysterious image is linked to an organization called "Raven". The famous detective Sherlock Holmes also became aware of the situation when a bomb exploded at Scotland Yard while interrogating a suspect.

Lily faints after seeing Lupin, while he and Fujiko escape Zenigata. Holmes vows to catch Lupin and tells Lestrade how Lupin was involved in the death of his partner, John H. Watson, 10 years earlier.

In England, Lord Marquess hosts a party for railway enthusiasts on his vast estate which includes a replica of a railroad. Zenigata convinces NYPD's Inspector Queen that Lupin will be there to steal a valuable historic railway ticket so he attends the party.

Eight assassins are waiting in a diner, having been hired to collect a bounty on a man called Andre Anderson, who will soon go there to eat.

"What's going on with this!?" For some reason, Lupin landed in Tokyo, the imperial capital of the early Shōwa era. There, Lupin is chased by Namikoshi, a police officer who looks like Zenigata and saved by the Black Lizard, a female thief who looks like Fujiko. They all called Lupin a "golden mask"... In a phantom world, what Lupin is supposed to steal?!!

Lupin is astonished by the guard who calls himself Goemon. While dodging the slash, he hurried to the exhibition room of the automaton clock. However, at the scene, Colonel Daidōji pointed his gun at Sarantuya and urged her to give him the key of the clock. The alarm rings and the police moves forward. Ruriko and Sarantuya fall into a further critical situation due to the actions of Daidōji. And Akechi, who heard the disturbance, is quietly reasoning... The great tumult of dreams and reality settles here.

Since then, the mental state of Holmes has changed. The come-back of Holmes has settled all the unsolved cases of the last few years, and the London's underworld has been shaken. Lily feels a bit of loneliness in the state of such a bloodcurdling Holmes. In the meantime, information about a man jumps into Lupin's ears and Lupin re-enters London to chase him. Zenigata, who was burning with Lupin's arrest, was waiting there.

Time goes back three years ago. Kenny, a boy attending a boarding school in Scotland, had a faint love for his classmate Lily. However, one day, during extracurricular study at the museum, an incident occurs in which Lily is about to be taken away by someone. There, Kenny meets a mysterious man who protects Lily from the shadows. Holmes, who cares about Lily, decides to take her out of her school.

A dark auction held in the basement of London. The exhibit was the treasure of "Sieg the Pirate King" who was executed in a Brazilian prison after a rampage in the Atlantic Ocean 100 years ago. However, Lupin's aim was an old kokeshi doll that was lost in it. Police officers invade the venue. During the confusion, Lupin obtains the map hidden in the kokeshi doll. This map shows the whereabouts of the undiscovered Sieg's treasure, the "Jet-Black diamond".

"That "bird" is beautiful because it flies in authenticity." That was the client told Fujiko. The target is the "Archaeopteryx's fossil" that lies in the Natural History Museum. The fossil that faithfully expresses the evolutionary process of living things had "Iwaku" that sways its true value. The more you listen, the more you wander with an indescribable empty the scent. Lupin, who was asked by Fujiko to cooperate, also frowns at this suspicion thing.

A developer was killed in downtown London. Holmes investigates the case as being related to Raven. Lily will also help gather information with her neighbors in Baker Street. The case led to Faulkner, who was killed. Meanwhile, Lupin also unfold the secret to get closer to Raven's treasure. A serious secret that Faulkner protected... If you have the "poster", you may be able to unravel it.

Interested parties converge on the Raven’s treasure in the shadows of the London underground as the true identity of Watson’s killer comes to light.

A hideout set up in New York. Under Lupin, who is bored while eating Jigen's home cooking, Fujiko raises the topic of an auction. A strange auction in which treasures from all over the world are put up for sale at once-of course, Lupin was interested, but the description of a jewel on the exhibition list caught his eye. The treasure, whose its origin and history are "unknown," was stolen from the mansion where the young Lupin once lived.

The woman's name is Mercedes. A female thief who leads the robbery group "Elvira" and causes trouble in various places. After confirming the safety of Mattea who was hospitalized, Lupin follows Mercedes to Mexico. Along the way, one of Lupin's crew told about Lupin's past-a woman named "Tomoe" that Mercedes talked about. And the enigmatic "mystery" about her... Lupin heads toward for a match with Mercedes to find out the truth.

Marriage of Count Fernand Maistre, a prestigious French aristocrat. Lupin aims at the traditional jewel "Tears of Marseille" that is given to the bride at the wedding ceremony. However, when Jigen saw the bride, he had a different expression on his face. The count's marriage partner is Mylene LeGrand, a town doctor who is not from a noble family. With a kindness like a saint, she is an unforgettable existence for Jigen...

Charismatic designer Gabby makes the world enthusiastic with his sense of creativity. For the first time in 5 years, how Goemon was selected as a muse at the new fashion show?! Gabby says that his hungry eyes as a sword fighter touched his heartstrings. Goemon, who continues to practice Bushidō in the world of fashion, faces unfamiliar model training...? Samurai and designer. The roads of these two are now crossing.

"L system" - It is the strongest security system created by the genius engineer Linfeng from ICPO. She proposes a game with Lupin to prove its true value to the world. The stage takes place in the Wangtic Securities Headquarters Tower, where the CEO is. What's blocking Lupin is an extraordinary amount of security! How Lupin will face an unprecedented and tough challenge!?

New York since the auction turmoil. Lupin reunites with Mattea, who has been discharged, and learns that she has decided to leave her florist. Feeling a bit of loneliness, she got information about "Tomoe" from the newspaper she suddenly saw Hazel, a female member of the Republic of Kotornica, was once educated by Tomoe. Lupin flies to Kotornica to confirm Tomoe's survival. However, there was Mattea who was traveling by chance.

Zenigata captured on suspicion of murdering Hazel. The conflict between the two parties spreads suspicion and upset to Kotornica. Lupin does not touch because of the promise with Hazel. It is the role of Yatagarasu and Arianna to save Zenigata. --Two people struggling to investigate while being disturbed by the local police. The chain of "mysteries" caused by the deepfake incident ... What is another deep lie hidden behind the truth?

When a con artist friend of Fujiko's proposes a foolproof plan to rip off a cult, it sounds almost too good to be true… but there’s more to Amelia’s story than meets the eye.

Mitten, an island where time flows quietly. Lupin and his friends are trapped on the island due to a bridge failure, and they have an unexpected holiday. A girl, Muru, who works at a café, is curious about the look of the Lupin's crew who appreciate with their free time. With her sketchbook in her hand, the girl began to have delusions of Lupin's relationship. Meanwhile, Fujiko hears the legend of a mermaid that has been handed down from ancient times on the island...?

Finn Clark is a 15-year-old girl who came to a homestay in Levonland, a country in the far north. What she wants to know is about her mother. And also about her dad, that she doesn't remember his face. "Who is my dad? Why did my 16-year-old mom die in this country?" - Finn digs up her mother's record from her house buried in the snow... Lupin, meanwhile, also continued to search for something, relying on all the records having on the net.

Zenigata encounters by chance Lupin in Levonland. Zenigata tells him that he came here after Mattea and that Arianna was attacked by her. Lupin is confused and cannot accept this shocking fact. However, Zenigata carried the voice recorder of Arianna... When he heard the recording, many words came to his mind. They were fragments of his beautiful memories that were shaken.

Blood may be thicker than water, but is it as thick as thieves? Find out as Fujiko, Goemon and Jigen race to bring Lupin back to himself in the finale.