Jiang University has a bright face and works hard every day, but is reluctant to drink milk tea in order to save medical expenses for his younger sister. No one knows that he is "Ember", the top broker of the underground order. He has a system of equal exchange, and as long as he has money, he can buy everything. When the chaebol daughter laughed at him for being a pauper, he was considering whether to sell the other family's shares to his competitor as a "price".