The narrative kicks off when master thief Lupin the Third targets a legendary treasure said to be hidden deep within the impenetrable Alcatraz
Federal Penitentiary. Driven by the thrill of the impossible, Lupin recruits his loyal marksman partner, Daisuke Jigen, and the master samurai, Goemon Ishikawa XIII. Meanwhile, the perpetually frustrated Inspector Zenigata is hot on their trail, determined to finally lock Lupin away for good. Adding her own brand of
unpredictable danger, the seductive femme fatale Fujiko Mine is also operating in the shadows, pursuing her own selfish agenda regarding the vault’s contents.Upon infiltrating the grim island prison, Lupin discovers that the heist is far more complicated than a simple burglary. The Alcatraz vault is not merely a repository of gold, but the headquarters of a sinister, shadowy criminal syndicate known as "The Pub." Led by a ruthless mastermind, the organization uses the high-security prison as a front for a massive global conspiracy involving advanced technology and political blackmail. Lupin realizes that the treasure is actually a powerful data core that could destabilize international security if it falls into the wrong hands.As the crew navigates deadly security traps and armed guards, internal tensions flare. Fujiko plays a double game, temporarily betraying Lupin to secure a massive payday for herself, forcing the thief to constantly outwit her maneuvers. Jigen and Goemon carve a path through waves of mercenaries, showcasing their legendary combat skills in high-stakes action sequences within the crumbling cell blocks. Zenigata, caught in the chaos, is forced to temporarily ally with Lupin to survive the syndicate's onslaught and protect innocent lives.The climax erupts in a massive, explosive showdown on the island's rocky shores as The Pub attempts to airlift the data core away via helicopter. Lupin executes a daring, physics-defying aerial maneuver, outsmarting the syndicate leader at the eleventh hour. The mastermind is defeated and left for Zenigata to arrest, while Fujiko escapes with a consolation prize. Ultimately, Lupin loses the main treasure in the fiery chaos, but he secures a priceless personal victory, escaping into the night with Jigen and Goemon, leaving Zenigata empty-handed once again as the legend of Lupin the Third endures.