The Kingdom of Granzreich has four ambitious princes competing for the throne. Led by their royal tutor Heine Wittgenstein, they must navigate obstacles and overcome hesitations to grow into strong contenders. However, their peaceful journey is disrupted by twin princes from the Kingdom of Romano. Though they may seem adorable, these princes are notorious for their sadistic tendencies. Forced into crisis mode, Heine and the four princes must use their skills in "educational guidance" to tackle this unique situation.