On the day of her divorce, Lin Xiaoman takes nothing but the ancestral jar of sauce with her. Her ex-husband, Lu Zihan, scoffs at it, only to discover that his restaurant empire collapses after losing the foundation provided by that sauce. He kneels in the rain and begs to reconcile, but with the help of her best friend Su Yao, Lin Xiaoman has already brought a time-honored brand back to life with a single spoonful of sauce. Lu Zihan's mother watches in secret, clutching half a bottle of sauce she hid years ago, while rival Zhou Mingxuan quietly sets a revenge plot in motion. When the aroma of the sauce fills the entire city, her ex-husband regrets it so deeply he nearly bangs his head against the wall. What he lost was not only love, but also the ultimate trump card kept hidden in reserve.