When she was eighteen years old, Wang Pan received a diary from her future self, asking her to kiss Zou Kai, whom she had a crush on. She plucked up the courage to do it, only to be told "crazy" in return. Ten years later, she returned to China as an elite lawyer, and the first case she took on was Xu Ze's divorce lawsuit. In the court, a yellowed diary page slipped from the briefcase, with unfamiliar handwriting written on it - "Wang Pan, thank you for taking the initiative to kiss me, now it's my turn." It turned out that she kissed the wrong person ten years ago, and the boy she missed had been waiting for her for ten years.