Beauty KOL Ding Yau-ying's sarcastic style has boosted his popularity. Lui Zi-tung, incoming group boss cum beauty brand CEO, is arrogant and egotistic. She finds out Yau-ying harshly criticizes her own brand products, and the duo pick on each other as soon as they meet. Because of an accident, Zi-tung's brain is hurt, and her mind becomes like that of a kid. Zi-tung's father Lui Zhen-ngok and assistant Sheung Cha-lai want Yau-ying and Zi-tung to pretend they are a couple so as keep the eldest son of the Lui household Lui Tak-shun in check. Cha-lai tries his best to help Zi-tung hide the truth, but he is threatened by Tak-shun, who finds some flaw. People around Zi-tung are touched by her sincerity and genuineness, and Zi-tung also reminds Yau-ying to never forget childhood innocence. The duo begin to have affectionate feelings for each other. While they live a happy life, Zi-tung's brain condition deteriorates.