The monstrous Bahl attacks the Kingdom of White, indiscriminately slaughtering all in his path. While Iris rushes to intercept him, the Prince of Darkness begins his training to become king far below in the Kingdom of Black.

Iris agrees to join forces with the King of Darkness to put an end to Bahl and his indiscriminate rampages. The forces of darkness rally to stop Bahl's assault, but can they hold out long enough for the two monarchs to bring him down?

With the prince and Groza left stranded on the surface, the King of Darkness launches his final assault on the Kingdom of White. Will Iris and her forces be able to withstand his onslaught?