Detective Miwako Sato, a seasoned member of the Tokyo Metropolitan Police Department, joins forces with colleague Wataru Takagi to aid Interpol inspector Koichi Zenigata in tracking the elusive international thief Lupin III, accused of stealing the Cherry Sapphire gemstone. Tasked with safeguarding the jewel, Sato participates in strategic security preparations, only for Lupin to outmaneuver their defenses by impersonating Takagi. Her efforts extend to coordinating with law enforcement teams to decode Lupin’s enigmatic motives, uncovering ties to a shadowy conspiracy centered on a rare mineral coveted for its military potential. Sato applies meticulous investigative techniques throughout the case, though details about her personal history or prior career remain unspecified in existing records.