After coming upon a magical sword that turns her into the legendary heroine She-Ra, Adora takes part in the uprising against the villainous Horde to save her planet.
As Adora and the princesses train to gain more strength, Catra and the Horde advance, while Glimmer struggles with leadership.
In their quest for answers, Adora and Catra travel to the Crimson Waste. Meanwhile, the very reality of the planet is threatened by Hordak's portal research.
As Adora and the princesses deal with betrayal, Catra sets out to take control of Etheria before the arrival of Horde Prime, while Glimmer finds her new role to be demanding.