Raekon, now Sovereign of Organic Earth, is informed of a problem within the barricaded region known as Thistlebriar. He and the assembly members are distraught on hearing of the abuse and killing of people called meeks—revealed by an informer. Raekon decides to send a team of spies to Thistlebriar to investigate.

No one has ever entered Thistlebriar, since its creation more than 400 years ago. Chances of finding a solution to the abuse and killing are unknown. Raekon wants to save the meeks from their plight but it may be too late.

Corilan, Raekon's mother, is changing—losing her abilities. She's afraid of what is happening to her and sets out to confirm her suspicions. Go with Raekon and Corilan and discover where they venture for keys in hope of achieving eternal peace on Organic Earth.