Prologue to the Cleaner

In 2155, a large number of mutated monsters suddenly appeared on the surface. They were called "pathogens" by the people because they were highly infectious. At the same time, the blessed Cleaners also emerged. After hundreds of years of struggle, the number of pathogens has finally been effectively controlled. However, in an inconspicuous small city, a catastrophic conspiracy is quietly growing. As a local liquidator, how should Qindao River face the upcoming crisis? In this disaster, humanity and morality are also disappearing little by little.