Set in the African savanna, "The Lion Guard: Return of the Roar" introduces Kion, the second-born cub of Simba and Nala, who is destined to become leader of the Lion Guard, a team of animals comprised of the Pride Lands' fiercest, bravest, fastest, strongest and keenest of sight.

As Kion looks to assemble the members of the new Lion Guard, he does not call upon a group of lions to serve with him as tradition dictates, but instead chooses some of his friends whom he believes best exemplify these heroic qualities - Bunga, a fearless honey badger; Fuli, a confident cheetah; Beshte, a friendly and good-spirited hippo; and Ono, an intellectual egret.