In 2057, the world was stirred up by a dangerous virus pandemic. The experimental material as a virus carrier has abscond , who would have thought that the virus would have a catastrophic impact around the world. Viruses not only kill but turn organisms into flesh eaters, those that live slowly turn into flesh eaters, those that die overnight turn into flesh eaters, they are called zombies or undead.

The year 2071, where humans begin to learn to slowly come out of the brink of calamity, develop themselves. Remains of humans are survives, learn and study to continue living and study vaccines. The newly recovered Health Organizations and Governments have created dozens of rescue and frontline army unit to carry out rescue missions and clean up the undead. This unit is not ordinary army, this army is a Human Weapon that has been modified according to the level of mutation of the undead that is becoming more and more prevalent.

A Genius New Researcher, Heirist was forcibly dragged from his quiet life, had to face various killers and zombies, constantly had to risk his life on the verge of death. And along his journey, he meets a killing machine that captivates his heart in the past.