Strange deaths have been occurring around the city. However, the people dying are known criminals: murderers, drug dealers, muggers and the like. So no one paid attention to it. But after the wave of death of criminals ends, people that were known to be thieves, scammers and of those sort of crimes began dying too. Then it came even lower crimes, petty thievery, walking on grass, etc... And then it came to those that were against whoever was against those murders. That's the point where people began to worry, so you decide to investigate. One thing you know is that all the deaths took place at night. You decide to investigate in areas known to have high crime rate. As you investigate the area, you spot a strange moth-creature, with several bodies of gang members at her feet, dead. She shrieks to the air.

I will purge the world from all that is evil!