At the end of the prequel The Roar the truth is revealed that The Wall does not separate the Northerners from poisonous gas but from the Southern civilization. In The Whisper, the plot delves into the specifics of the divide between the two governments that are disconnected both physically and ideologically. The narrative explores the disconnection in all realms in this dystopian world, people have disconnected from nature, their humanity, and common ideologies. Therefore there is a vacuum left that threatens the survival of both civilizations, in that, the South intends to abandon the North in their destitute conditions and willing to poison them. Whereas the Northern government is preparing itself to go to war by training the mutant children.
Accordingly, the spirit of the story is reconnection supported by Mika, Ellie, and their mutant team of telepathic children. Mika and Ellie are tasked now with leading the previously brainwashed mutant children meant to fight the war with the South. The Southern civilization is portrayed as a greedy corporate giant that sought after a quick solution to the degenerating natural world. They chose to seclude themselves physically and segregate the lower status populace in order to save nature. Due to the technological revolution, the world spiraled into a dystopian existence as biological life was threatened by human activity. The Northern adults as the scapegoats of this disconnect with nature suffered the consequence of isolation and propaganda.
Therefore reconnecting to what was, though in a different way is the mission of the mutant children as they mitigate the tension. They plan to unite the North and the South by resolving their resentments and determine their survival collectively. The telepathic connection between the mutant children of the North acts as an allegory of their intention and the solution needed in this dystopian world. The children aim to implore the adults to reconnect with nature, their roots, civility, and collective consciousness.