Shi Jian and Ye Jia Cheng are a couple envied by people around them. Shi Jian was pregnant and she was planning to fly to San Diego to give Ye Jia Cheng a surprise. Before she left, her ex-boyfriend, Chang Jin, was finally released from prison after ten years. They met each other. Chang Jin apologized to her. Both of them gave each other their blessing. She met Yi Pei when she was in New York's airport. An accident happened. She time traveled and went back to ten years ago. She was sure that she was in a dream as she tried her best to wake up. But the various occurrences around her have made her doubt herself. She went to find Yi Pei, who was on the same place as her, only to realize that he didn't know who she was. (Source: Viu)