Lin Bei Xing, an "experienced girl" who is about to enter her 30s, missed out on achieving her dream of love as her boyfriend, Zhan Yu, breaks the contract, and her life and work have become a mess. However, not sure if this is the God playing tricks on her, Lin Bei Xing returned to the age of eighteen. The third year of high school is a nightmare, but Lin Bei Xing decided to retake the college entrance examination and get rid of Zhan Yu, to live anew for herself. However, Lin Bei Xing's sweet dream was dashed by a boy called Zhang Wan Sen. The accidental encounter of Zhang Wan Sen after the college entrance examination became the switch to end Lin Bei Xing's time and space journey.