This is the story of a lone female doctor. In 202X, in a modern society saturated with information and stress, people's worries are constantly increasing, and sexual anxieties are gradually becoming unspeakable taboos. Against this backdrop, there exists a freelancer, a lone doctor, who doesn't belong to any hospital. This woman, for example, hates groups, hates authority, hates constraints. Her only weapons are her medical license and her honed sexual skills. Airi Hishima, also known as Doctor-SEX.