The plot centers on Lupin and his crew (Jigen, Fujiko, Goemon, Zenigata) racing neo-Nazis led by Lambert and Geralt to secure the Bresson Diary and prevent resurrection of the Third Reich via an ancient power source called the Eclipse, set against a WWII backstory of Nazi atrocities. Themes focus on legacy, deception, treasure hunting, and stopping fascist villains—traditional storytelling with no identity politics, systemic oppression narratives, or critiques of traditional norms. Established characters retain their original genders, personalities, and roles with no swaps or rewrites; new character Laëtitia is an original female ally fitting the adventure without driving any ideological framing.

Creator intent and reception emphasize fun caper elements, jazz score, and animation quality, with parents' guides noting only mild violence, fanservice, and language typical of the series. No evidence of progressive messaging, DEI casting mandates, or activist themes appears in plot summaries, reviews, or searches for controversy. The Nazi antagonists represent classic good-vs-evil conflict rather than modern activism. Casting evidence: Casting research is incomplete or contains unresolved comparisons; overall casting fidelity has not been established. Documented credits include Kanichi Kurita as Arsène Lupin III (voice); Miyuki Sawashiro as Fujiko Mine (voice); Suzu Hirose as Laëtitia (voice).