Kobayashi leads a solitary life in her apartment until Tooru unexpectedly arrives, and they start cohabiting. Tooru, who views humans as beneath her and silly, feels indebted to Kobayashi for rescuing her. She tries her best to repay this debt by assisting Kobayashi in numerous ways, though her efforts don’t always go smoothly. This is a whimsical comedy about the daily life of a diligent office worker sharing her home with a dragon girl.