Ishuzoku Reviewers focuses on the human Stunk and the elf Zel, who are buddies, living in a world where numerous races exist. Stunk and Zel have different taste in women and because of that they always argue, which race is the best. To find it out, they sample brothels of all different species. One day, they discover that they can make money out of their quest and to review girls, they had relations with. The two also meet an angel that cannot return to the heaven and because of that joins the duo in their quest.