Beloved criminal Lupin III has his sights set on a new score: the crown of the Vespanian royal family! His timing, however, couldn't be worse. The sudden death of the queen and prince of Vespania has thrown the country into disarray, and while that won't hurt the gentleman burglar's efforts, it comes with a small problem... and that problem's name is Conan Edogawa! Throw in a royal case of mistaken identity, along with a shadowy plot born from greed, and it's a stage appropriately set for a clash between the world's greatest thief and the world's greatest detective!