"Cop Craft" is set in the fictional city of San Teresa, where a mysterious hyperspace gate has connected Earth to a magical world called Faerie. This event leads to an influx of refugees, magical beings, and advanced technology, creating a melting pot of cultures and conflicts. The story centers on Kei Matoba, a seasoned detective in the San Teresa Police Department, and Tilarna Exedilika, a knight from the Faerie realm. The two form an unlikely partnership to solve crimes that span both worlds, blending human investigative techniques with Faerie magic.

The narrative begins with the disappearance of a young Faerie girl, which leads to a deeper conspiracy involving human trafficking, political corruption, and the exploitation of both humans and Faeries. Kei, initially skeptical of Tilarna's abilities and methods, gradually develops a mutual respect for her as they navigate the complexities of their partnership. Tilarna, unfamiliar with human customs and technology, relies on Kei's experience while contributing her own unique skills and knowledge of the Faerie world.

Throughout the series, the duo tackles various cases that highlight the cultural and technological divide between the two worlds. These include smuggling rings, illegal magical artifacts, and rogue Faerie creatures. The overarching plot involves a shadowy organization seeking to destabilize the fragile peace between humans and Faeries, with ties to both worlds' political elites. Kei and Tilarna's investigations uncover layers of intrigue, forcing them to confront their own biases and the moral ambiguities of their work.

The characters are defined by their contrasting backgrounds and personalities. Kei is a pragmatic and jaded detective, shaped by years of dealing with the darker aspects of human nature. Tilarna, on the other hand, is principled and idealistic, driven by a sense of duty and honor rooted in her Faerie upbringing. Their dynamic evolves from initial friction to a strong partnership, balancing humor and tension as they navigate the challenges of their dual-world environment.

The series explores themes of coexistence, prejudice, and the clash of cultures, set against a backdrop of urban crime and political intrigue. The interplay between human technology and Faerie magic serves as a central element, driving both the plot and the world-building. "Cop Craft" presents a blend of action, mystery, and character-driven storytelling, anchored by the evolving relationship between its two protagonists.