In the late 19th century, the British Empire nobility reigns while its working class suffers at their hands. Sympathetic to their plight, William James Moriarty wants to topple it all. Frustrated by the systemic inequity, Moriarty strategizes to fix the entire nation. Not even consulting detective Sherlock Holmes can stand in his way. It’s time for crime to revolutionize the world!

The stage is Sapporo, Hokkaido. One night, our heroine, Minare Koda, spills her heartbroken woes to a radio station worker she meets while out drinking one night. The next day, she hears a recording of her pitiful grumbling being played live over the air. Minare storms into the station in a rage, only to then be duped by the station director into doing an impromptu talk show explaining her harsh dialogue. With just one recording, the many eccentric facets of Minare's life begin to pull every which direction as she falls ever deeper into the world of radio.

Denji has a simple dream—to live a happy and peaceful life, spending time with a girl he likes. This is a far cry from reality, however, as Denji is forced by the yakuza into killing devils in order to pay off his crushing debts. Using his pet devil Pochita as a weapon, he is ready to do anything for a bit of cash.