The Whisper is about Ellie and Mika Smith, two mutant teens destined to stop a war. Ellie and Mika have been taken by the Northern Government to join their children's army to start a war to take what the Northern Government believes belongs to them in the South. The people of the North were tricked into leaving their homes in the South and now live in a concrete jungle filled with poverty and disease. The South built a wall supposedly to protect the North from the animal plague that they were told was rampant in the South. It keeps the Northern people from knowing that the South is a natural wonderland where the rich live in mansions and have let nature that was dying revive and thrive.
The Northern government knows the truth and is keeping it from the people. They want to start a war to obtain the good life for themselves and do not plan to let the poor of the North find out the truth about the South. Mika has seen the South so knows that the government is lying to the people. The Northern government has taken the children of the north to create an army. They have implanted them with devices in their foreheads to control their thoughts and make them obedient.
When Mika and his sister Ellie reunite their bond changes the course of the children’s army. Their connection takes over the implants in the children. The implants become a communication device between all the children who have been implanted. The children can feel the feelings of Mika and Ellie and obey their commands.
Mika, Ellie, and their friends who are the elite of the children’s army are not controlled like the implanted children. These children have special mutant abilities that make them special to Mal Gorman, the Minister for Youth Development. He believes with them at the helm of his army, they will start a war to take the South. The children, however, do not want to go to war. They plan to kidnap Mal Gorman and take over the fortress where the army resides so that they can take control of the North and negotiate with the South to let their parents reside in the South.
The team gets their chance when Mal Gorman has Mika and Ellie to go on a mission to the South to obtain Everlife-9 which will make Mal Gorman younger and fit so that he does not have to reside in a wheelchair and linked to machines to stay alive. With Mal Gorman's mobile, the children will be able to get him to a hideout in the South without issue.
Once Mal Gorman has taken Everlife-9, which ironically, he takes too much of making him twelve years old, the same age as the children, the team can take over the fortress and spirit Gorman away to the South. They stash him in a pig sty at the home of Helen Gelt in the South. She is sympathetic to the plight of the people in the North so helps the children. Once the fortress is taken, the children’s army takes out the fortifications along the wall separating the North and South. They then attempt to call the South to negotiate. Raphael Mose, the leader of the World Conservation Club in the South does not take them seriously because they are children.
To make the people see them as responsible, they allow the war to begin. The people of the North learn the truth about the South and begin congregating at the Wall. They make a bomb and blow out a section of the wall. The borgs that the South uses for protection begin to assault the people who attempt to come through the wall. The children’s army comes to the rescue and the war ends as soon as it began. Mika Ellie and their team must go to Raphael Mose’s home to negotiate so that he will take them and their mutant abilities seriously also so that he cannot push the button to poison the North. To save their way of life, the South has set up a system to poison the people in the North if they attempt to return to the South. They blame the people of the North for the destruction of nature and do not want them to come back and destroy the progress they have made in bringing back the natural wonders.