This is an urban love epic that spans two decades and combines suspense, workplace and light science fiction elements. The main plot tells the story of the heroine Su Yumian who suddenly gained the ability to "reappear yesterday" when she was 30 years old. She was able to go back ten years ago and save her lover Lu Yuzhou who "disappeared" due to a time and space accident when she was 20 years old. The story unfolds intertwined in two time and spaces, 2012 and 2022, and involves in-depth discussions of female growth, social issues and human nature.
