Fifteen years after a hyperspace gate opened over the Pacific and flooded Earth with fairies and monsters from another world, San Teresa has become home to two million otherworldly immigrants. A botched drug operation there costs detective Kei Matoba his partner and lets a kidnapped fairy slip away, and he is handed a new one: Tilarna Exedilica, a Knight of Mirvor sent from the Farbani Kingdom to bring the fairy home. Their mismatched partnership drives this light novel series, the source material behind the Cop Craft anime.