On their third wedding anniversary, Hao Ren discovers that his wife, Liu Ruyan, has hidden contraceptives inside an old medicine box and is leaving home under the pretext of a business trip. Records of the box being accessed, suspicious behavior during video calls, and photos of a romantic dinner posted by her assistant, Li Yuntao, gradually reveal the truth about her betrayal. In a fit of anger, Hao Ren had tampered with some of the contraceptives. After receiving a second usage notification, he proactively informs her, demands that she stop using them, and preserves the records, preparing to take responsibility.