Jiang Yue and her boyfriend Lin Ye have been in love for three years. They thought they would get married together, but unexpectedly, Lin Ye seamlessly ended up with someone else. The blow of the breakup caused Jiang Yue to suffer from depression and finally chose to end his life. A year later, Lin Ye, who had started a new life, suddenly remembered Jiang Yue for some reason and wanted to go back and renew their relationship. He sent Jiang Yue a text message. However, it was this text message that made Jiang Yue, who died with hatred, be reborn to the time when the two first started falling in love. After rebirth, Jiang Yue decided not to repeat the same mistakes. On the surface, she was still the gentle and love-minded girlfriend, but secretly she began to make plans quietly. She used clever methods to collect information about Lin Ye's every move, and at the same time carefully recalled every bit of her time with Lin Ye, trying to find out the real reason for their breakup.