In the land of Thra, a young guard discovers a terrible secret about the Skeksis overlords who control the planet -- and its powerful Crystal of Truth.

As Deet sets out on her quest, Aughra awakens from a long journey, Rian flees the castle, and Brea searches for the meaning of the mysterious symbol.

Brea struggles with her unsavory new duties, Deet and Hup get a hostile welcome from the Stonewood clan, and Rian begs his Maudra for help.

While Brea races to solve a puzzle in a hidden room beneath the throne, the Chamberlain hatches a plan to catch Rian and win back the Emperor's trust.

Desperate to save one of their own, the Skeksis make a deal with Aughra. Rian and Deet continue their search for the Dual Glaive.