On the seventh day when the "red mist" swept across the world, the once prosperous Binhai City became an isolated island besieged by zombies. Retired soldier Lin Feng unexpectedly awakened the ability of "mechanical link". In a desperate situation where water, electricity and supplies were cut off, he led a group of survivors with their own unique skills. Using an abandoned factory as a base, they transformed cars into armored vehicles, built fortifications with tower cranes, and established a reconnaissance network with drones. They not only have to fight against the never-ending tide of "Bone Eater" zombies, but also beware of predators with twisted human nature. In the collision of steel and flesh, they use the roar of machinery to sing the war song of survival - the real line of defense is never cold metal, but the human heart that never gives up.
