I reviewed the first “book” of this animated series here. The main thing to note about season 2 is that paired with the first season, there is a more substantial story. With now 18 episodes in total, there is a more rounded feel to the characters and better immersion into the world.
Season 2 also has a slightly different story-telling pace. Season 1 split between two halves: the first doing a lot of backstory, world-building and setting up the stakes and characters and the second being more episodic. Season 2 has fewer events and let’s the the story follow it’s own logic more.
Aside from that, the basic qualities of the show is the same. A relatively conventional fantasy setting (elves, dragons, magic-systems) but with more diverse characters and a rejection of some plot cliches (the younger of the two brothers is the heir to throne, the brothers are nice to each other and aren’t rivals, the antagonists are sort-of nice people trying to do their best). It’s a very anti-cynical show, which is nice. There is a possible big-bad introduced to the story now but mainly the conflicts have been established by people believing they are acting for the best, while not recognizing the needs or beliefs of others.
A charming, very kid friendly fantasy with enough dark moments to give the story some bite.