When the first prince Eins shuts himself in his room for days, Count Rosenberg finally resolves to accept the help and care of Heine and the other four princelings. But when they finally burst into Eins's room, the eldest brother is nowhere to be found...!

When the first prince Eins shuts himself in his room for days, Count Rosenberg finally resolves to accept the help and care of Heine and the other four princelings. But when they finally burst into Eins's room, the eldest brother is nowhere to be found...!