15 years after a portal to the world of fey opened over the Pacific Ocean, the gateway city of San Teresa is a hotbed of crime both mundane and fantastic. Grizzled veteran detective Kei Matoba finds himself assigned a new partner: Tirana Exedirika, a knight of the very same magical race that Kei hates; even worse, she’s young, naive, and has a strong sense of justice. Together, they fight crime.