Sneaking out after a training mission, Horde soldier Adora finds an uncanny sword in the Whispering Woods; Princess Glimmer wants it for the Rebellion.

On the run from a monster, Adora, Glimmer and Bow stumble into an ancient First Ones ruin, while the Shadow Weaver orders Catra to bring Adora back.

Glimmer concocts a plan to introduce Adora to Bright Moon, but it all goes wrong; Adora flees into the woods, where she meets an old woman named Razz.

Adora and her friends undertake a relief mission to the besieged kingdom of Plumeria; the Shadow Weaver still wants Catra to bring Adora back.

The squad heads for the water realm of Salineas, ruled by Princess Mermista, but first they need a ship; Catra sets sail with Force captain Scorpia.

A recruitment trip to Dryl goes awry thanks to a virus that corrupts Princess Entrapta's robots; when Adora transforms, it also infects She-Ra.