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[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/lupinfuma.png]]
[[caption-width-right:350: A Ronin and Thieves and Ninja... Oh, My!]]
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Originally released in 1987, this is the first -- and until 2002's ''Return of the Magician,'' only — OVA in the history of the [[LongRunners Long-Running]] ''Franchise/LupinIII'' franchise. The sub-title has also been rendered as ''Plot of the Fuma Clan'' and ''Mystery of the Fuma Clan''.

It is even more notable as the only ''Lupin III'' release to use none of the usual Japanese voice actors (or music composer) associated with the series, a decision made by Creator/TMSEntertainment for budgetary reasons.[[note]]At the time, the ''Lupin'' cast were the highest-paid voice actors in Japan.[[/note]] This was the only time in the entire franchise till 2021 where you would not hear Creator/KiyoshiKobayashi voicing Jigen, for instance. Due to communication breakdown, the decision to use new actors was misinterpreted by Lupin's seiyuu, Creator/YasuoYamada, as original creator Creator/MonkeyPunch being unhappy with his performance and wanting a new voice cast. In reality, while Monkey Punch did not like TMS's decision, he felt he had no control over it and did not fight it. Sadly, this incident put a permanent strain on Yamada and Monkey Punch's friendship, which remained unresolved at Yamada's death in 1995. Since then, no regular ''Lupin'' character has been re-cast until the actor dies or chooses to retire.

The special opens with the wedding of Goemon to Murasaki Suminawa, the daughter of one of his teachers. During the wedding, a precious Suminawa heirloom urn is to be handed over to Goemon to symbolize him joining the family. The ceremony is interrupted by {{Ninja}}, who are fought off by Goemon and his friends Lupin, Jigen, and Fujiko. The ninjas fail to steal the urn, but do make off with Goemon's bride. In exchange for her return, the ninjas of the Fuma clan want the urn, which is the key to finding a secret treasure hidden in the mountains of Japan. Lupin and his gang work to both rescue Murasaki and take the treasure for themselves. Meanwhile, Zenigata, who believes Lupin to be dead following an explosion, comes out of retirement when he finds out his long-time rival may have survived after all...

''Fuma'' received a limited theatrical release by Creator/{{Toho}} before its release as an OVA, in spite of its short (70-something minutes) length. It was released twice in North America, once by Creator/{{AnimEigo}} and again by Creator/DiscotekMedia, though [[KeepCirculatingTheTapes both editions are currently out of print]].

'''Complete spoilers below''' – don't read further if you don't want to know how this caper turns out!

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!!This film provides examples of:

* AbsurdlySharpBlade: Goemon's Zantetsuken, of course. At one point he effortlessly cuts up a bunch of trees.
%%* AffablyEvil: The BigBad is this during his conversations with Fujiko and Murasaki's grandfather.
* AntagonistInMourning: During the opening, we see Zenigata, retired from his work as a detective, as a Buddhist monk praying for the soul of Lupin, hoping when Lupin is reborn, he will no longer be a thief.
* BadBoss: The BigBad seemingly has no qualms about losing subordinates, and he also shows no emotion after some of them are butchered by a trap.
%%* BaldOfEvil: The leader of the Fuuma Ninja. Also AmbiguouslyBrown for some reason.
* BifurcatedWeapon: The main villain begins fighting with Goemon with a staff, but shortly reveals that it can also convert to a set of oversized nunchaku.
* CataclysmClimax: The entire cave is rigged to collapse. The heroes make it out alive, [[spoiler:but all the treasures are lost.]]
* CelibateHero: Averted by the normally aloof Goemon, who falls in love with Murasaki. [[spoiler:And played straight at the end of the movie when he tells her he cannot marry her.]]
* ContinuityNod: Lupin and Goemon had earlier tangled with the Fuma in the ''Anime/LupinIIIPartII'' episode "[[Recap/LupinIIIS2E36 The Riddle of Tsukikage Castle]]", and would again during ''Anime/LupinIIITheLastJob''.
* DamselOutOfDistress: While Murasaki is a typical DamselInDistress, Fujiko is defiant to her captors, up until she manages to escape them and rejoin the heroes.
* DamselInDistress: Murasaki, who twice found herself the target of kidnapping and/or traps. The first was when she was captured by a Fuma Ninja during her wedding, and demanded the MacGuffin in exchange for her life. The demand motivated Goemon and company to steal the vase and deliver it to the Fuma.
%%* DisneyVillainDeath: Kazami, thanks to Murasaki.
* DubNameChange: Like pretty much every other ''Lupin'' dub made during this time, this one changes this titular character's name. Uniquely, it changes it to "Rupan".
* DungeonCrawling: The second half of the movie is dedicated to Lupin & the gang exploring an ancient cave to find the treasure. {{Death Trap}}s abound.
* DurableDeathtrap: The traps in the cave work quite well, despite being centuries old.
* FifteenPuzzle: An ''n''-square puzzle hides the Suminawa family safe and Lupin's remote control bug has to move cupboards around to the correct layout in order to see the safe.
* GenkiGirl: Murasaki, in great contrast to the TheStoic Goemon.
* HappyFlashback: Goemon is [[SeparateSceneStorytelling reminiscing to the gang]] about how he met Murasaki while they're on their way to make the HostageForMacGuffin switch. The happy story is then ended with Inspector Zenigata's arrival, and the trio have to escape.
* HollywoodDensity: Fujiko managing to smuggle a large slab of gold out under her jacket.
* HostageForMacGuffin: The Fuma kidnap Murasaki when they're prevented from stealing the vase, and offer to trade her in exchange for the vase at an "abandoned" train yard.
* ImportantHaircut: Zenigata shaves his head when he becomes a monk to mourn for Lupin. Impressively, he remains bald for the rest of the film.
* LackOfEmpathy: The BigBad seemingly has no qualms about losing subordinates, and he also shows no emotion after some of them are butchered by a trap.
%%* TheMole: Kazami, who keeps an eye on Zenigata.
* MythologyGag: During one of the nightmare sequences, Lupin's face is distorted by hallucinogenic gas. Rather than immediately becoming a monster, his face first cycles through the various designs of his previous incarnations[[note]]In order: ''[[Anime/LupinIIIPart1 Part 1]]'', [[Manga/LupinIII the original manga]], ''[[Anime/LupinIIIPartII Part II]]'', ''Anime/TheMysteryOfMamo'', and ''[[Anime/LupinIIIPartIII Part III]]''[[/note]].
* NerdGlasses: Lupin wears these as part of his {{salaryman}} disguise.
* NightmareSequence: At one point the group stumble onto a trap that releases an hallucination-inducing gas. Among various things, Lupin sees Goemon and Jigen's faces ''melting into goo'' right in front of him.
** Later on, the poor Fuma fall into the same trap. [[spoiler:Each of them hallucinate horrible monsters, who are actually their allies. It is implied that they kill each other out of mistaken fear.]]
%%* {{Ninja}}: The Fuma Clan. They also use guns and technology.
* NoNameGiven: The boss of the Fuma Clan was never given a name and just goes by that title.
* PricelessMingVase: Fujiko has the vase hilariously put on her head when she is captured by the bad guys. [[spoiler:She has to break it to get it off.]]
* RailroadTracksOfDoom: When Zenigata was chasing Lupin's car towards the end of the chase, he was accidentally driving on the trolley car tracks after Fujiko uses her smokescreen to trick the inspector. Unfortunately for him, the trolley car was going after him and tries to get away before being crushed.
* RummageSaleReject: Murasaki pieces together a new outfit from Lupin's clothes so she won't have to move around in her wedding kimono. One of the pieces she chooses is his legendary red jacket (Lupin himself wears the green jacket in this caper).
* SeparateSceneStorytelling: Goemon is reminiscing to the gang about [[HappyFlashback how he met Murasaki]] while they're on their way to make the HostageForMacguffin switch.
* ShoutOut: The UsefulNotes/FuumaKotaro are included as the main villains for this film.
* StealthHiBye: Well, we are talking about ninjas, though it is still pretty astounding to see a previously empty narrow corridor suddenly filled to the brim with massive ninja henchmen.
* StatusQuoIsGod: [[spoiler:Goemon leaves Murasaki at the end of the film, as he feels he needs more training.]]
* WingedSoulFliesOffAtDeath: Although it is obvious Lupin is still very much alive, Zenigata imagines seeing Lupin floating up to heaven with angel wings and a halo after his 'death' in an explosion.
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