Lupin the 3rd Vs Detective Conan

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...