Lupin III: The Fuma Conspiracy (Japanese: ルパン三世 風魔一族の陰謀, Hepburn: Rupan Sansei Fūma Ichizoku no Inbō, lit.

Due to budgetary reasons, it utilized a different voice cast from previous animated entries, with Toshio Furukawa as Lupin III, Banjō Ginga as Daisuke Jigen, Mami Koyama as Fujiko Mine, Kaneto Shiozawa as Goemon Ishikawa XIII, and Seizō Katō as Inspector Koichi Zenigata.

It was released on subtitled VHS and LaserDisc in North America by AnimEigo in 1994 under the "Rupan III" name, due to copyright concerns with Maurice Leblanc's Arsène Lupin.

Meanwhile, Inspector Koichi Zenigata has retired to a Buddhist temple following the apparent death of his long-time quarry, Lupin.

Lupin and Daisuke Jigen discover that the urn contains a hidden drawing revealing the location of the treasure: a cave deep in the mountains.

After surviving the gas, Lupin and company enter a large cavern, where they find an old castle furnished from top to bottom with items of solid gold.

He explains that the cave is rigged to collapse unless the golden fail-safe key, the one Fujiko found, is inserted into the slot in the entrance, but since he destroyed it, it ensures the treasure's destruction and the Fuma Clan's demise.

Goemon bids farewell to his fiancée, declaring that he must undergo training to address his weaknesses; only then will he return to marry Murasaki.

[2][failed verification] When the news was broken to Yasuo Yamada, it was not made clear who was responsible for the dismissal, leaving him with the impression that Lupin III's creator Monkey Punch had lobbied the producers for a new voice actor.

Monkey Punch tried to reassure Yamada (with whom he had developed a friendship during the years of Lupin TV series) that he had nothing to do with it, and the regulars were reinstated with the first television special, Bye-Bye Liberty - Close Call!.

For example, the treasure cave mountain is based on a real location in the Gifu Prefecture: Mt Shakujo, as well as the local spa's rotemburo, an outdoor soaking pool, used in the police chase.

[7][8] Licensor Toho demanded the change out of fear that the estate of Maurice Leblanc, creator of the original Arsene Lupin, would sue for the unauthorized use of the name.

[3] Mike Crandol, writing for Anime News Network, called The Fuma Conspiracy "quite possibly the best-animated installment of the series", far superior to the later TV specials.

[8] He praised the chase scenes as the film's highlights and the fact that the characters "express their personality through their movements", something he said is uncommon in anime.

However, Crandol stated the "touch-and-go plot" makes it a poor introduction to Lupin III for new viewers and felt that the film was too "rushed".

On the voice actor change, he noted that Toshio Furukawa makes Lupin sound like a "novice scamp than the experienced thief from other adventures.