Fujiko Mine operates as a professional thief and occasional accomplice to Lupin III. In this adventure, she infiltrates the Tokyo File newspaper as its editor, assigning journalist Mariya to document Inspector Zenigata's activities. Fujiko leverages Mariya's connection to antagonist Michael Suzuki for undisclosed objectives. She collaborates with Lupin to steal photographic plates linked to the Tokugawa treasure, recruiting Goemon Ishikawa XIII for a helicopter extraction during a highway heist. Fujiko negotiates an agreement with Lupin to split the treasure 80% in her favor, maintaining an opportunistic alliance.
Fujiko employs seduction and manipulation as tactical tools. She infiltrates Suzuki's corporate suite under false pretenses but is captured alongside Lupin, forcing a joint escape using gas masks. At the climax within Suzuki's Aquapolis, she participates in thwarting his human cloning scheme while primarily focused on acquiring valuable assets like the photographic plates.
She embodies her persona as a self-serving strategist. Her background includes ties to organized crime and a former assassination partnership with Killer Poon. Fujiko possesses skills in marksmanship (using a Browning M1910), martial arts, multilingualism, disguise, and vehicle operation. She experiences claustrophobia and a fear of frogs.
Her relationship dynamics follow established patterns: she exploits Lupin's romantic pursuit, faces distrust from Jigen, and pragmatically coordinates with Goemon despite his reservations. During Lupin's temporary incarceration, Fujiko assumes a leadership role, directing the team and demonstrating her capability for independent operation or command when advantageous. The resolution sees her evade arrest as Suzuki is apprehended, consistent with her recurring evasion of consequences.