The world has become a fertile ground for zombies. After continuous development and growth, they have finally become the mainstream force and the ruling group. Unlike before, the zombies, led by Big Daddy, are no longer unorganized and undisciplined, but have begun their real life as zombies. The few humans who survived built a siege in deep trenches and high fortifications, living inside and not daring to go out. However, the newly built society is still the law of the jungle. The rich, powerful and influential people still live in high-rise buildings, away from the threat of zombies, while others have to wander the streets in fear. The peace is short-lived. The living dead are making more terrifying plans. It is only a matter of time before they capture the last territory on earth. At the same time, because of the continued life of terror, the anger in the city is getting heavier, and anarchist ideas are everywhere. Whether outside or inside the city, the atmosphere of battle has reached a boiling point! However, the only thing protecting the siege is a group of mercenaries who serve the rich and receive huge rewards and a seemingly invincible giant armored vehicle.