At the foot of Qingyun Sect's mountain, Chen Qianrou, the young proprietress of Hundred Flavors House, runs the porridge shop left behind by her mother, making a living with a single pot of spirit grain porridge. Du Tongtian, a quiet customer dressed in coarse cloth, comes by every day to buy porridge on credit, accumulating a debt of three hundred bowls. The shopkeeper of the neighboring Immortal Gathering Tower, jealous of the opportunity to provide food for the Hundred Herbs Banquet, secretly sabotages her by switching the rice and salt. Relying on her mother's recipes for pickled wild vegetables and wild mushrooms with brown rice, Chen Qianrou passes every round of the selection process. On the day of the grand banquet, the salt jar is switched, but she quickly saves the situation with aged brine and ultimately takes first place. During the feast, Du Tongtian stands up, and Zhao, the sect's steward, respectfully addresses him as Mr. Du. The customer who had owed her three hundred bowls of porridge turns out to be a sect guest elder who had been in seclusion for a hundred years. Back when he was down on his luck, he too had tasted a bowl of hot porridge served by Chen Qianrou's mother at the foot of the mountain.