A pack of tissues tears apart twelve years of classmate affection. Zhou Hai brought his construction team to eat at Yan Jie Fast Food Restaurant for twelve years. Because of a pack of tissues, the proprietress Lin Yan dug up old accounts, paid off 18,640 to sever the relationship, and transferred to Old Ma's Worker Cafeteria. Old Ma operates with clear pricing and honesty, winning the workers' trust and cooperation for the Hengjian project; Lin Tao used 9.9 inferior meals to poach customers and even sabotaged Old Ma's equipment, ultimately being taken away. The rise and fall of the two shops thoroughly write how the accounts of business and human hearts should be calculated.