"Lupin III THE FIRST" is a 2019 animated film that serves as a modern continuation of the classic "Lupin III" franchise, blending traditional elements with updated animation techniques. The story centers on the legendary thief Arsène Lupin III, who sets his sights on a mysterious artifact known as the Bresson Diary, a treasure linked to his grandfather, Arsène Lupin. The diary is said to hold the key to the Eclipse, a powerful weapon from World War II. Lupin’s quest to steal the diary is complicated by its current possession by Laetitia, a young archaeologist and granddaughter of Professor Bresson, the diary’s original owner.

Laetitia initially seeks to protect the diary, believing it to be a crucial piece of her family’s legacy. However, her motivations become entangled with those of Gerard, a former Nazi officer who seeks to exploit the diary’s secrets for his own nefarious purposes. As Lupin and his team—including his loyal accomplices Jigen, Goemon, and Fujiko—pursue the diary, they uncover a web of historical intrigue, betrayal, and danger. The narrative weaves together high-stakes heists, daring escapes, and moments of camaraderie, all while exploring themes of legacy, trust, and the consequences of war.

The film maintains the franchise’s signature blend of action, humor, and suspense, with Lupin’s charismatic and roguish personality driving much of the story. His interactions with Laetitia add emotional depth, as her journey from protector to ally reflects the film’s exploration of personal and historical connections. The plot’s pacing balances intense action sequences with quieter, character-driven moments, culminating in a climactic showdown that ties together the diary’s secrets and the fates of all involved. "Lupin III THE FIRST" successfully revitalizes the classic series while staying true to its adventurous spirit and timeless appeal.