"Interspecies Reviewers" is set in a fantasy world where humans coexist with various mythical creatures, including elves, demons, angels, and other fantastical beings. The narrative centers around a group of adventurers who, instead of pursuing traditional quests, dedicate their time to visiting brothels that cater to different species. Their goal is to evaluate and review these establishments, providing detailed accounts of their experiences. The series explores the diverse cultures, preferences, and anatomies of the various species through the lens of these reviews, blending humor, fantasy, and social commentary.

The main characters include Stunk, a human adventurer with a straightforward and often blunt personality; Zel, an elf who is more reserved and analytical; and Crimvael, an androgynous angel who joins the group and adds a unique perspective. Each character brings their own preferences and biases to the reviews, creating a dynamic interplay of opinions. The group encounters a wide array of brothels, each tailored to specific species, and their interactions with the staff and other patrons often lead to comedic and sometimes unexpected situations.

The plot is episodic, with each episode focusing on a different establishment and the group's experiences there. The series delves into the intricacies of interspecies relationships, highlighting the challenges and peculiarities that arise from such interactions. While the premise is rooted in adult themes, the narrative often uses these scenarios to explore broader themes of acceptance, diversity, and the breaking of societal taboos. The world-building is rich, with detailed lore about the various species and their customs, adding depth to the otherwise lighthearted and comedic tone of the series.

Throughout the series, the characters' camaraderie and differing viewpoints provide a foundation for both humor and character development. Their adventures are not just about the reviews but also about their personal growth and the bonds they form with each other and the world around them. The series balances its adult content with a sense of whimsy and exploration, making it a unique entry in the fantasy genre.