Percy Jackson has a set of rules to survive the zombie apocalypse. These rules helped him endure the grueling months of zombies trying to eat his brains and humans trying to exploit his resources. However, a random encounter forces him to join a group of survivors. Annabeth Chase is very smart and strong. Zombies are no match for her intelligence and leadership qualities. Her main responsibility is to keep everyone in her group of survivors alive. But, after the arrival of Percy, her life becomes inexplicably complicated. Survivors always have the same questions. Why did they survive? And, will there ever be an end to the apocalypse? Percy and Annabeth need each other to obtain those two answers.