Sonic, Knuckles, and Tails reunite against a powerful new adversary, Shadow, a mysterious villain with powers unlike anything they have faced before. With their abilities outmatched in every way, Team Sonic must seek out an unlikely alliance in hopes of stopping Shadow and protecting the planet.

Rafiki relays the legend of Mufasa to lion cub Kiara, daughter of Simba and Nala. Told in flashbacks, the story introduces Mufasa as an orphaned cub, lost and alone until he meets a sympathetic lion named Taka—the heir to a royal bloodline. The chance meeting sets in motion a journey of misfits searching for their destiny and working together to evade a threatening and deadly foe.