5x13 - Lupin the Third

Lupin's next target is the Bloody Teardrop, a national treasure of the south-east Asian kingdom of Padar which is currently worn by the royal princess Dolma, a very independent and forceful girl. As fate wills it, Dolma attends the same boarding school as Ami and has even - as a fellow oddball - become friends with her. A terrorist group calling itself the Whales of Liberation occupy the school and takes the students and teachers (including Fujiko, who has infiltrated the institute for the jewel) hostage. Fujiko frees Ami, and they team up to take them down from within, aided by Lupin's gang, who have also discovered the terrorists' presence. However, one of the teachers reveals himself as McGuire, a CIA special agent, who prepares to spirit Dolma away because, as he states, Pandar is in danger.