Lin Na transfers to her fiancé Gu Zhun's school to end their long-distance relationship, only to catch him acting intimately with Tang Tang, the class beauty, and publicly denying that he knows her. She decisively leaves their engagement group and breaks off the engagement, but Tang Tang, Zhou Yue, and others retaliate by splashing milk tea on her, sticking 'homewrecker' notes on her, editing videos, and spreading rumors on the campus forum. Calmly preserving the evidence, Lin Na exposes the engagement group, chat records, and audio recordings in front of everyone, revealing that Gu Zhun has been deceiving both women. Tang Tang and Zhou Yue receive disciplinary punishment. Gu Zhun's desperate attempts to win Lin Na back fail. Lin Na goes abroad for graduate studies, where she meets Shen Yanzhou, a man who respects her. She rejects Gu Zhun's attempt at reconciliation and ultimately chooses to get engaged on her own terms, reclaiming the right to make her own life choices.