When King John seems unconcerned that Novelmore’s defense plans have been stolen, the prince (Arwynn), a lone warrior (Gwynn) and an inventor (Dario), decide they should track down the culprit.
When Arwynn, Gwynn and Dario discover that the Raiders are after the most powerful weapon in the Five Realms — the Invincibus — they band together to save Novelmore.
When a troupe from a neighboring realm shows up to entertain King John on his birthday, Arwynn, Gwynn and Dario discover they’re hiding an explosive secret.
When Timithor reveals that Arwynn has gotten himself captured, King John orders a rescue mission. Gwynn and Dario need to help the army in an attack from the Raiders’ dragons.
Arwynn escapes from the Raiders just as Gwynn and Dario come to rescue him. But they’ve got a bigger problem now: the giant lava cannon that’s pointed towards Novelmore!
The wizard Timithor takes Arwynn, Gwynn and Dario on a journey through time to show them how the Invincibus came to be, as well as the dark future it could hold for each of them.
While Arwynn and King John reunite with family, Gwynn and Dario focus their attention on battle and Brody discovers a new way to track down the Invincibus.