The mother of the CEO of the Zhou Group, unable to stay idle, hides her identity and works as a cleaner in the company. She uses a limited-edition luxury bag given to her by her son as an ordinary canvas bag to hold sundries. This day, her son's white moonlight returns to the country, bringing her best friend and carrying an A-grade knockoff bag of the exact same style as the female lead's to the company to find her son. However, she accidentally drops the bag, mistakenly recognizes the female lead's bag as her own, and subjects the female lead to a series of humiliations. When she discovers the female lead's true identity, she regrets it bitterly.