It is set in a fictional world in the 1800s, where vampires, werewolves and witches exist but are not welcomed by most, but in this particular city, they are treated as a gift from god.

The story is set around a group of people with supernatural gifts that form the Grimsile Magic Detective Unit as they are tasked with solving a string of murders while also juggling other minor cases apart from their daily lives.

Their lives couldn't get any more difficult when another group interferes in the murder case, bringing more chaos to the table.