Despite receiving hostile glances from others in the insurance field, Nakai, the auditor, is pleasantly surprised to receive a friendly smile from his neighbor, Takahashi. Unfortunately, their brief exchange is cut short when Nakai learns that Takahashi is responsible for handling a client matter as a salesperson and holds a deep-seated dislike for auditors like Nakai. With their incompatible job roles, what will become of these neighboring professionals as different as oil and water?