Ep. 4: The princes embark on an incognito field trip to the royal capital
Aired on April 26, 2017

The sheltered princes participate in a field trip to the royal capital under the guise of a lesson. They display immediate excitement upon departing. However, their behavior suggests they may be plotting something behind the back of their small teacher. The narrative focuses on their activities during this incognito outing into the city.
Episodes
- Ep. 1 · Heine Wittgenstein becomes royal tutor to four deceptive princes at Weisburg Palace
- Ep. 2 · Royal tutor Heine prepares to interview the remaining three princes for the throne
- Ep. 3 · Heine Finishes Prince Interviews and Prepares for First Lesson
- Ep. 4 · The princes embark on an incognito field trip to the royal capital
- Ep. 5 · King Victor summons Heine and the princes for a challenging audience regarding Leonhard's future.
- Ep. 6 · Heine Encounters Prince Licht, Who Resembles a Childhood Friend, at Café Mitter Meyer
- Ep. 7 · Prince Bruno struggles with his brother Leonhard's genius while Heine offers guidance on life choices.
- Ep. 8 · Prince Kai struggles with communication advice from his brothers and Professor Heine.