Yun Zhiyu has the ability to see people's heart-flutter scores. Her ex-husband, Xiao Yan, once loved her deeply, but after Shu Tang returned to the country, his heart-flutter score for Yun Zhiyu dropped to zero, and he resolutely divorced her. Five years later, they meet again. Xiao Yan falls for her once more and wants to reconcile, but Yun Zhiyu has already registered her marriage to Feng Guanyu. At a class reunion, Shu Tang deliberately makes things difficult for Yun Zhiyu and pushes her, injuring her. Xiao Yan takes Shu Tang's side, but Feng Guanyu rushes over to protect his wife. Xiao Yan makes one mistake after another. When a sudden downpour destroys Yun Zhiyu and Feng Guanyu's wedding venue, the couple transforms the space on the spot. Xiao Yan, now down on his luck, begs Yun Zhiyu to take him back, but she rejects him. Their candlelit wedding takes place as planned, beneath the rain. One year later, Yun Zhiyu loses her ability to see heart-flutter scores and finally understands that true love is never a cold number, but a commitment built through years of companionship.