The world is plagued with a disease, almost everyone, everywhere is Ill, except for the Immune, the small population of earth that were not infected with the initial wave of the disease. They soon find out the disease is not the "cold" they were told it was and are left to live in the broken remains of the earth. For most Spring is a time of new life and rebirth, this time it brings destruction and death with it, and it doesn't stop there. Trevor and his two friends, André and Opalescence, are three young survivors who are thrown into the mist of the disease, uncovering secrets the doctors and government had not let out and fighting for their very lives from not only the Ill, but also the surviving Immunes, which might just mean themselves.