Little by little, the problem princes have been facing their flaws and learning more about themselves as Professor Heine grooms them for the throne. But when Count Rosenberg makes another appearance, they realize there's one thing they still know nothing about: the royal tutor himself...
The Professor I Don't Know
الأستاذ الّذي لا أعرفه
Der Professor, den ich nicht kenne
El profesor que no conozco
El profesor que no conozco
SA FACE CACHÉE
Il professore come
 non l'ho mai visto
O professor que desconheço
Профессор, которого я не знаю.