Aktha and Supes's dragons go on a deadly rampage under Pytonpyt's control. Thaim and Aktha must travel to Ancient KOTOWARI and uncover its hidden truth in order to stop Pytonpyt's invasion.

Thaim is devastated by Nagi's sacrifice. His dragon's roar suddenly pierces his ears, awakening to a new power. Meanwhile, the evil force in Upananta begins its destructive transformation.

The touching moment of Nagi's reunion with her mother is cut short by a vicious intruder.

Nagi finally learns the hidden truth of Upananta, while Thaim uncovers another, deadlier secret.

The joy of reuniting with Aktha is cut short when Thaim is forced to challenge him to a duel.

Thaim travels to Nagi's world. Nagi joins him in his search for Aktha.

Nagi encounters a mystifying situation as she tries to uncover the secret behind her dreams.

Nagi keeps dreaming of Upananta, a world with a dragon-riding hero. However, that hero is gone.