Investment banking star Shen Qiushi quits her job and returns to her hometown, taking over only a rundown family restaurant on the brink of closing.
Everyone urges her to sell it and cash out, but the battered recipe book her grandmother left behind is missing its final page, and a jar of family-recipe braising stock has been aging for forty years.
A science student learns to cook with Excel, practicing her knife work on potatoes until her fingertips bleed and breaking down in tears while making nine layers of stuffed intestines.
A sharp-tongued master pastry chef keeps her on track, a documentary filmmaker follows her journey to preserve the craft, and a rival chain restaurant spends lavishly to poach her recipes while trying to crush her business.
As she uncovers old keepsakes, she glimpses her grandmother's life: fleeing famine and meeting a mentor, researching a lost signature dish amid food shortages, and turning down a million-yuan salary to stay and protect her little restaurant.
To preserve its intangible cultural heritage status, she travels across Jiangnan's small towns in search of the lost Returning Boat Soup.
Only when she opens the paper hidden for years in the recipe book's lining does she understand the answer her grandmother found in life:
Cooking has never been about recreating a flavor. It's about making the people at the table want one more bite.