Professional organizer Ye Cheng returns to her father's old hardware store, determined to implement standardized renovation using scientific classification and color-coding systems. However, her stubborn old father Lao Ye Tou, who insists on human-relationship ledgers, and the neighbors accustomed to blindly groping and borrowing, resist this cold set of rules in every possible way, leading to constant conflicts. Facing deeply rooted traditional prejudices and sudden emergency rescue crises, can Ye Cheng use precision and high efficiency in order to dissolve barriers, safeguarding the warmth of the marketplace while bringing new life to the old street? This becomes the biggest highlight of the entire drama.