Constantly at the bottom of the sales rankings, Giseok finds himself on the verge of being fired because of his unsatisfactory results. His only escape? To become the leading salesperson. In a state of desperation, he resorts to pillow deals, which are seen as the ultimate taboo in sales. Will he be able to navigate through temptation, jealousy, and the intricacies of office politics to reach the pinnacle of success?