Ae Ran (72) is a mother who runs a side dish store in the neighborhood. She's not on very good terms with her part-time lecturer son Gyu Hyun (42). Gyu Hyun despises his mother's bad temper but he's no angel to her either. Ae-ran makes good food with the best ingredients so she has a lot of customers. Whenever Ae Ran needs to remember something or how to make something she writes everything down in detail in her own notebook. One day, Ae Ran is diagnosed with Alzheimer's. She can't remember what's important and remembers what's not. She can't remember how to make pickles but she remembers her son who died 40 years ago. Her symptoms got so bad she has to close her store and Ae Ran takes herself to a sanatorium as she doesn't want to burden anyone.
With his mom gone and left alone with her notebook, Gyu Hyun discovers the notebooks while cleaning and goes through them. It doesn't only have the recipe for her food but her hopes and despairs as well. Gyu Hyun and his mother used to get along and they were happy. Gyu Hyun goes into the kitchen and starts cooking according to her recipes.