Following the outbreak of a disease that has turned everyone over the age of sixteen into zombies, a group of young survivors barricade themselves in a store and struggle to survive. Eventually, they are offered a safe haven within Buckingham Palace, but quickly discover that the dangers inside the palace are just as real as those outside it.

In London, after a worldwide sickness infects adults, turning them into zombie-like creatures, DogNut and his crew embark on a deadly mission to find missing friends, as hungry, bloodthirsty grownups lie in wait.

"First the sickness rotted the adults' minds. Then their bodies. Now they stalk the streets of London, hunting human flesh. The Holloway crew are survivors. They've fought their way across the city and made it to the Natural History Museum alive--just barely. But their fight will never end while the Enemy lives, unless there's another way... The kids at the museum are looking for a cure. All they need are medical supplies.To get them they must venture...

In this kids versus zombies book Shadowman, realizing that Saint George's army is headed toward the center of London, has raced ahead to warn the kids of the impending disaster.