A tiny professor walks into a room full of problem princes and somehow teaches them something real about themselves instead of just the curriculum. Each brother gets an actual arc that matters, not filler character moments that reset by the next episode. The show knows exactly how light it is, it never pretends to be heavy, and that permission to just let four broken kids slowly become better versions of themselves hits harder than it has any right to.

Heine Wittgenstein, a brilliant but pint-sized scholar who is both charming and stern, is summoned by the king of Grannzreich to serve as Royal Tutor to the four princes. His job is to shape a worthy heir, a post every previous tutor abandoned. The brothers are a handful: Licht, the flirtatious youngest; the immature Leonhard; the studious Bruno; and Kai, the reserved eldest. Much of the comedy comes from Heine working to reach each one. Meanwhile, his own mysterious past and darker currents in the kingdom hint at trouble ahead.