Wen Xi, a modern culinary genius, transmigrates into a novel as a cannon-fodder maid and is sent to the residence of Xie Chen, the prefect of Huaizhou. With just a bag of white flour and a locust tree in bloom, she makes fragrant locust flower cakes and uses them to open the prefect's doors. Starting from a small stall along the Grand Canal, she builds her business into the Xingyuan Kitchen. When the Imperial Delicacies House deliberately tries to suppress her, she outsmarts her rivals and rises against all odds to become the richest woman in the Great Xia dynasty. Meanwhile, the cold-faced, picky Lord Xie has long been appearing at her stall again and again under the identity of Xie Sui'an.