In a world where steam, magic, machinery, alchemy, and extraordinary powers coexist, Luke, after being transported to another world, finds himself facing Imperial secret agents. To survive, he pretends to be a detective and uses his knowledge of the plot to get rich and enhance his abilities. His actions, however, lead to the unraveling of a major smuggling case. As a fake detective, he navigates the chaotic world, using his secret arts and wits.