Those of animal-like characteristics and superior magic, aka "creatures" pose a threat to humanity, which sparks fear and hatred. The government project "GRIMS" originated to eradicate them. Dakota is a skilled detective and secretly a GRIM, but she seems to choose her victims based on own rules unlike any of her kind. Little did she know an encounter with a particular creature will put her convictions in question. Will they cooperate to uncover the city's filthy secrets?