Lin Yue brings her boyfriend of three years, Zhou Hao, to her grandfather's birthday banquet, only to find that he attempts to control her income and family property under the pretext of a betrothal gift. After being rejected, Zhou Hao impulsively damages a treasured Tang Dynasty guqin kept in the home. Lin Yue chooses to protect her rights according to the law, while hidden issues such as borrowing money to fake savings and misappropriating company assets are successively exposed. Facing the entanglement and false accusations from Zhou's family, she clarifies the facts with evidence, brings the responsible parties to legal justice, and finally ends this calculation-filled relationship, returning to a peaceful life.