The episode is a brother/sister rivalry between Kion and Kiara as she is made acting Queen for several days while Simba and Nala are away making a tribute to the elephants. Rather than being away for the episode, we get to follow Simba, Nala and Zazu on their journey during which Zazu sings Simba an inspirational song about all the good reasons he should enjoy being King. Meanwhile, Kion doesn't like that Kiara is bossing him and the guard around, helped along by an immature Zuri and Tiffu. Janja tries to take advantage of the developing rift between Kion and Kiara.
I liked the episode, it was good to have Simba, Nala and Zazu get some screen time, and I quite enjoyed the song. So if you enjoy sibling bickering, and a badly placed poop joke, this is the episode for you
Mufasa does make another appearance, however it is nice that Kion does not summon him on this occasion, he appears of his own accord. I also knew we would see that Hyrax again
I like how we now have a potential for so much fan-fiction and comics regarding Simba's elephant friend who helped him restore the Pridelands after Scar's reign. There's so much to explore there.