The world is split between a kingdom of light in the sky and a kingdom of darkness on earth. As the King of Darkness devotes himself to war, monsters ravage his lands. A boy whose village was destroyed by monsters questions the king's rule.

In the Kingdom of White, Iris reflects on her duties and the events that led her to become queen. Meanwhile, in the Kingdom of Black, the Prince of Darkness enters a competition to make his position as heir to the throne official.

The prince and Adel travel as envoys to the Kingdom of White. Although they bring an offer of alliance, their nations are still at war, and they are greeted with suspicion and hostility. Can the prince successfully navigate the pitfalls of diplomacy?

Groza joins the prince and Adel in the Kingdom of White, bringing an offer to extend the peace between the kingdoms. While the two sides work to build their newfound frienship, Groza finds herself irritated by the prince's interest in Iris.