After five years of working alone, Lupin III, Daisuke Jigen, Goemon Ishikawa, and Fujiko Mine receive invitations to a reunion abroad the luxury liner Sirloin. Jigen, Goemon and Fujiko think that Lupin sent the invitation, but Lupin says his invitation was sent by Fujiko. Inspector Zenigata shows up with an arrest warrant that Lupin points out to be fake. It turns out that all the invitations were sent by a villain known as Mister X, who first appeared in the first episode of the original television series.

A Brazilian soccer team, the Santos Futebol Clube and the New York Cosmos from the USA "an actual team which in the late 70's managed to hire Pelè" square off at the world's largest sports arena, Rio de Janeiro's Stadium Maracanan. Lupin goes after the money from the ticket sales for the event. In order to have an alibi, Lupin, Jigen and Goemon get themselves arrested by crashing a truck into Christ the Redeemer. While in the jail's hospital, Fujiko helps Lupin and the others get out to steal the money and hide it inside the Christ the Redeemer statue.

Supposedly, an old man named Genhardt, who used to work for Hitler, knows the secret of the legacy of Hitler and is living on the other side of the Berlin Wall. After getting the old man across the Berlin Wall from East to West Germany, Lupin is unable to get the man to recall the location of the legacy. Lupin and the others plan a reenactment of the days of Hitler in order to get Genhardt to reveal the location of Hitler's Legacy.

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Note: This episode was not immediately broadcast in the U.S. nor included on the Volume 1 DVD release due to its controversial content. Instead, the episode was aired after the Season 1 finale, "The Rose and the Pistol," and later included on the Volume 5 DVD.

At Loch Ness, Scotland, the mysterious monster Nessie shows itself charmed by Fujiko's singing. Doctor Oz, seeing this, decides to use Fujiko to draw out Nessie so that he can capture it and show it all over the world. Dr. Oz's other motive is to get revenge on the monster for having bit off his leg many years ago. Lupin, Jigen and Goemon seek to help Fujiko and the Loch Ness Monster from Dr. Oz.

Fujiko and a mystery man come bringing a request that Lupin steal a mountain of gold bullion from the Swiss Bank, which is renowned throughout the world for the strength of its security. After stealing the gold, Lupin and the gang melt it down and mold it to look like the body of a truck. They then paint the gold cast and replace an old truck body with it. After Lupin and the others get the car past the cops, Fujiko and the mysterious man betray Lupin and take the gold for themselves.

Someone comes along and demands that the Italian government pay him a ransom if they don't want the Leaning Tower of Pisa destroyed by an earthquake. He has a device for generating artificial earthquakes that he plans to use. The government meets his demands, but Lupin has it in mind to take the money for himself. Zenigata chases Lupin into the enemy's lair, and, thinking that the Italian government defied his orders, the criminal hits the switch that activates the machine. Lupin tampers with the machine, however, and it explodes.

Lupin uses a balloon to boldly steal the solid-gold mask of Tutankhamen. But the instant he puts it on, what appears before his eyes is the world of the pharaohs, 3000 years ago. It seems that the mask is cursed and the only way to break the pharaoh's curse is to put the mask back where it came from. Jigen, Goemon and Fujiko plan to help out Lupin by returning the mask for him.

The Trans-Europe Super Express is transporting a racehorse from Italy to France. But the collected valuables of crime boss Don Marcino is also aboard that train. His true objective is to get his ill-gotten gains out of the country. Lupin goes after the treasures of Don Marcino.

An old man Lupin meets by chance turns out to be the grandson of ukiyo-e master Tōshūsai Sharaku. To test his own skill, he has been switching his own works for Sharaku's originals, but suffered a heart attack just as he was about to make the last switch. Fujiko, who has been helping the old man, asks Lupin to make the last switch for him.

At the invitation of Marcel, a young noble of Paris's jetset, Lupin escorts Fujiko to a party. But this is a trap set by Marcel, who has another face. He takes Fujiko hostage, straps a timebomb belt around Lupin's waist, and tells him to steal a certain criminal list from Scotland Yard before time runs out.

Lupin has come to Monaco to race in the Grand Prix. Beforehand, when he goes to the casino to try his luck, he loses all his money, even his Formula One car. It turns out that he was set up by a fixer as part of a conspiracy aimed at the race, which involves forcing Lupin to race for the mob boss responsible for the set up because if Lupin wins, then everyone who bets on Lupin wins a lot of money since all the other are expected to bet against him.

The last bottle of Bordeaux wine which Napoleon had made for Josephine is going to be given to the President of the United States as a Christmas present. Lupin and company head to Bordeaux in order to claim it for themselves, but are chased off by gunfire from Zenigata. Their next attempt is the secret hijacking of the Concorde transporting the bottle over the Atlantic Ocean. After Lupin tricks Zenigata into thinking that the plane is actually flying, he steals the bottle of wine and replaces it with a fake. After, Lupin and the gang celebrate by tasting the old wine, which had spoiled.

Zenigata has been suffering from a persecution complex, one in which he feels certain Lupin is watching him. He seeks the help of psychiatrists to get rid of his delusions of Lupin. Meanwhile, some group has implanted microfilm containing a process developed by NASA for creating artificial diamond in one of Zenigata's back teeth. Lupin goes up against that group and attempts to take the microfilm for himself.

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Note: The scene when Zenigata runs away from Lupin's plane could be considered as a possible homage to Alfred Hitchcock's classic thriller film North by Northwest.

Foward Hees, the world's richest man, dies a mysterious death. Fujiko receives a large ruby in his will, but she too is attacked by a flock of black birds. The ruby was stolen from a temple of a cult located in the Caribbean. In order to save Fujiko from a mysterious fever, Lupin and company head there to return the ruby but are attacked by black magic zombies.

Count Gabriel challenges Lupin to steal Dracula's Tear, the world's best-known carbuncle, from on board his airship, the Hendenburg, with Holmes III, Detective Archer, Kaneda Koojisuke, and Inspector Zenigata in attendance. Lupin must complete the task before the airship lands at an airport where the police are waiting for him.

Lupin seems to suffer from transformation sickness, in which one changes into another, cruel personality, and commits crimes repeatedly, but has absolutely no memory of what happened during that time. After numerous crimes not worthy of the name of Lupin, the man himself, having completely lost his self-confidence, even contemplates taking his own life, in his depression, but due to various factors, cannot succeed at dying. It turns out that someone disguised as Lupin has been committing the crime and conspiring with a doctor to trick the real Lupin into believing that he is suffering from transformation sickness.

A blackmail notice is delivered to a small Arab country threatening to destroy the oil fields if the country does not pay $100,000,000. Lupin and company set their sights on the payoff money, but according to intelligence agent Hassan, the enemy is apparently using human bombs. The gimmick is a remote-controlled capsule bomb implanted in the person's stomach. In fact, Hassan himself is the enemy leader, Lawrence III, the grandson of Lawrence of Arabia. Fujiko conspires with Lupin to trick Lawrence III into revealing his true identity to his league of loyal followers.

The Black Panther is a one-of-a-kind emerald. When light shines on it from a certain angle, a black panther appears to be hidden inside it. Lupin steals the gem, planning to give it to Fujiko for her birthday, and hides it temporarily in the museum in order to evade a body check by the strict security cordon, planning to come back for it later. But when both Zenigata and Inspector Conaiseau get involved as well, the statue where the emerald is hidden gets accidentally transported to a nude resort where Lupin, Jigen and Goemon attempt to retrieve it.

Having returned to Japan after an extended absence, Lupin challenges the Marukin line of safes, renowned for being absolutely unbreakable, and cracks them at every turn. Having completely lost confidence in himself, Marukin experiences the grief of bankruptcy. As far as Lupin is concerned, it's his natural ability at work, but Marukin's son, Tetsutaroo, challenges him in his father's place. Giving Lupin poison, he forces him to accept the challenge of opening the safe he built himself, which contains the antidote for the poison, but the safe does not have a lock, door, or combination.

Setting his sights on the large medallion on Generalissimo Hutler's chest, which contains a 50-carat ruby, Lupin should have been able to take it easily enough, using his special rod-and-reel technique, but ends up exposing the Generalissimo's secret toupee instead when the wind blows the hook on his fishing line over Hutler's head instead of the jewel. The infuriated Hutler orders that Lupin and company be wiped out, and in the face of the attack by his combined armed forces, a wounded Lupin makes his stand in an old castle with Fujiko while Jigen and Goemon attempt to save them.

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Note: The overall episode takes obvious inspiration from Charlie Chaplin's 1940 comedy film The Great Dictator, particularly with the scene of Hutler tossing a globe-shaped balloon in the air. Hutler himself is based upon Chaplin's character Hynkel, who in turn was an exaggerated parody of Adolf Hitler.

Goemon returns to Iga after ten years, only to find his master, Jinen, near death. Before dying, Jinen tells Goemon that his junior disciple, Hissatsu Jinkuroo, stole half of the Scroll of the Secrets of the Iga Ninja, which contains a map showing the location of the Treasure of Iga. He also gives Goemon the remaining portion of the scroll, with the rest of the map. Jinkuroo, knowing that he doesn't stand a chance in a straight-on fight against Goemon, boldly has himself arrested, hoping to be put in prison, and thus beyond Goemon's reach. Lupin helps Goemon by getting Jinkuroo out of jail and setting up a head-to-head fight between Goemon and Jinkuroo.

Lupin and Jigen hear of an amazing treasure in a remote area, and go after it. Upon saving a woman being attacked by ruffians, the place she leads them to, by way of thanks, is a paradise on earth, with good-looking women everywhere. Lupin accepts the thanks, completely forgetting about the treasure. The fact is, this mansion full of women is for the purpose of seducing men, and then exposing them to an aging gas. Zenigata falls for the same trick as well, and he ends up inside the mansion alongside Lupin. Jigen gives up on trying to get Lupin's mind back on the treasure and leaves, but then realizes the secret of the mansion and enlists Goemon's help in saving Lupin. Meanwhile, Fujiko, who is also after the treasure of the mansion, ends up trapped inside, as well.

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Note: This episode takes its plot from chapter 4 of the second manga series, Lupin III – World's Most Wanted.

Lupin is feeling out of sorts, because lately he hasn't been able to get a hold of Fujiko. When he receives a phone call saying that she'll marry him if he passes her test, he takes off, but what he finds waiting for him is Fujiko's aunt, Mine Bujiko. The test is, either find Rommel's Gold, or pay for failing to do so with his life. Lupin throws himself into deciphering ancient hieroglyphics and almost gives up, but Fujiko's holographic image keeps him going. After unlocking the secret of the hieroglyphics, Lupin discovers that Bujiko is actually Fujiko in disguise.

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Note: This episode shares continuity with Episode 7 "Tutankhamen's 3000-year Curse." It also references the 1941 film noir The Maltese Falcon.

Appearing on a moonlit night, the figure in black who refers to Goemon as "the Thirteenth", calls himself "Nezumi-Koozoo IV." He informs Goemon that their ancestors teamed up in the International Thieves' Championship, but were defeated in competition by the original Arsène Lupin, and that they should team up to avenge this dishonor. The objective is top-secret data being kept under guard at Sakurada Police Station. Goemon and Nezumi split up, mounting a two-front offensive against Zenigata, who is reinforcing security.

There is a prison from which, it is said, no one attempts to escape. The reason is that the prison is guarded by Iron Lizards, which are self-propelled bombs that pursue people anywhere, based on genetic data stored in a computer. Lupin and company learn that Fujiko is inside held by the warden, who wants to have sex with her. In order to save her, Lupin, Jigen and Goemon get inside the prison, but end up captured by the warden who enters their genetic data into the Iron Lizards.

Zenigata heads to Spain after learning that Lupin is there. Meanwhile, Lupin and Jigen are in a Barcelona bar where a dancer catches the eye of Jigen. The woman works for Meyer, who, having been beaten by Lupin a number of times, sets Lupin and Jigen up to kill each other off by of making them appear to be enemies in disguise to one another. Lupin and Jigen meet up for a shooting match in the dark, but a secret code between them that involves shots aimed at a coin alerts Lupin and Jigen to the fact that they're being tricked.

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Note: This episode makes extensive use of Georges Bizet's Carmen Suites.