To save a century-old soy sauce estate on the verge of bankruptcy, sommelier Lu Xing attempts to reform the traditional soy sauce brewing process using modern laboratory techniques. However, his overly pursued purified product is not only severely criticized by top chefs, but also faces doubts from veteran craftsman Uncle Qi and immense pressure from external debt collection. Faced with the temptation of a sky-high acquisition, Lu Xing resolutely takes off his suit, determining to find the true flavor code in the coarseness of ancient fermentation. As modern tasting concepts and century-old heritage craftsmanship blend together, he will use a bottle of special grade soy sauce condensing both new and old wisdom to completely reverse the destiny of the traditional time-honored brand.