Wedding planner Xu Yuan is dumped on her wedding day, while her father Xu Jianguo, who suffers from Alzheimer's disease, insists on heading south to find his "ex-wife" Lin Ting. Xu Yuan angrily investigates, discovering along the way that the "ex-wife" in her father's mouth is actually the youth name of her late mother, Lin Tang. With the help of documentary blogger Chen Ye, Xu Yuan gradually pieces together the past of how her mother gave up her wedding dress dream for the family. In the end, she remade a wedding for her parents that was thirty years late, and completed a reconciliation with her father.