At the end of Black Iron Year 401, a large-scale plague broke out in Green Forest City in the Carls Federation.
No one knew where this virus had come from, but it spread all over the city in an instant. It was extremely infectious, took less than three hours from infection to onset, and the death rate was one hundred percent.
Moreover, the corpses would gain powerful strength and long for the flesh and blood of the living. They were given the name 'walking dead'.
If not for some extraordinary factors that prevented this virus from spreading to the world, it might have already been completely destroyed.
Even though this disaster affected only one city, it rapidly created hundreds of thousands of walking dead and also took away most of the energy of the federation. The Investigation Agency and the army had no choice but to rush to aid and isolate it from its surroundings. Even Holy Celbera and Arkham felt uneasy.
