After helping revive the legendary vampire Kiss-shot Acerola-orion Heart-under-blade, Koyomi Araragi has become a vampire himself and her servant. Kiss-shot is certain she can turn him back into a human, but only once regaining her full power. Araragi has hunted down the three vampire hunters that defeated Kiss-shot and retrieved her limbs to return her to full strength. However, now that Araragi has almost accomplished what he’s been fighting for this whole time, he has to consider if this is what he really wants. Once he revives this powerful immortal vampire, there is no telling what she might do, and there would be no way of stopping her. But there is more to the story that Araragi doesn’t understand. If a newborn vampire like him could defeat the hunters, how did they overpower Kiss-shot? Can he trust her to turn him back to a human? And how is that even possible in the first place? Araragi is at his limit but he must come to a decision, and it may not be possible to resolve this situation without doing something he’ll regret… [Written by MAL Rewrite]

Arsene Lupin III discovers that the spoils from his latest casino robbery are actually "Gothic Bills," legendary counterfeits that are nigh impossible to distinguish from genuine bills. Together with colleague Daisuke Jigen, he heads to the small nation of Cagliostro to investigate the origin of these counterfeits. Upon arrival, they save a girl from a high-speed chase who turns out to be Clarisse d' Cagliostro, the daughter of the late Duke d' Cagliostro. She is running from a sinister plot by Count Cagliostro to steal her family's treasure through a forced marriage.

Natural flirt Lupin dislikes seeing a girl in distress and seeks to remedy the situation. Goemon Ishikawa XIII, Fujiko Mine, and Kouichi Zenigata also join the fray, each with their own motivations. As everyone converges at Cagliostro Castle, Lupin reminisces about his visit there 10 years ago, and the castle's secrets emerge from the depths.

[Written by MAL Rewrite]

Two years after the birth of the manga a pilot film was released. It was a brief film of only 13 minutes that had the purpose of assay the response to a possible future anime realization of Lupin III. The pilot opens with a challenge call from Lupin to Zenigata from a public phone.
(Source: AniDB)

Lupin, the master thief/spy/Jack of all Trades, has been executed, but he is still alive, and not even Lupin himself knows how that is possible. While trying to figure out, however, he and his gang are thrust into a conspiracy involving clones, Lupin's un-trustworthy rival Fujiko, and a miniature madman's plot to take over the world.

(Source: ANN)