Horde soldier Adora stumbles across a sword in the Whispering Woods, after sneaking out following a training mission. Princess Glimmer is eager to get hold of it for the Rebellion.

Adora, Glimmer and Bow come across an ancient First Ones ruin, while on the run from a monster. The Shadow Weavers demand that Catra bring Adora back.

Glimmer comes up with a plan to introduce Adora to Bright Moon, but it all goes terribly wrong. Adora escapes into the woods and meets an old woman named Razz.

Adora and her friends organise a relief mission to the kingdom of Plumeria, which is currently under siege. The Shadow Weaver is still determined that Catra bring Adora back.

A recruitment trip to Dryl proves less than successful when a virus corrupts Princess Entrapta's robots, leading to She-Ra also becoming infected.