The near future; humanity has been all but destroyed by a mutated fungal disease that eradicates free will and turns its victims into flesh-eating zombies. Only a small group of children seem immune to its effects. At an army base in rural England, this group of unique children are being studied, subjected to cruel experiments by biologist Dr. Caldwell. Despite having been infected with the zombie pathogen that has decimated the world, these children retain normal thoughts and emotions. The children attend school lessons daily and one little girl, Melanie, stands out from the rest. She excels in the classroom, is inquisitive, imaginative and loves her favorite teacher Miss Justineau. When the base attacked by zombies, Melanie escapes along with Miss Justineau and Dr. Caldwell. Now, Melanie must decide both her own future and that of the human race.