Lin Xiyan, a 38-year-old stay-at-home mother, unexpectedly transmigrates back to 1999 on the day she divorces her husband, Chen Mo, returning to her college years at age 20.
Disillusioned with marriage but hopeful about the future, she swears that in this life she will stay away from Chen Mo, fulfill her dream of becoming a writer, and spend more time with her mother, who died young.
But fate has other plans, and she meets the young Chen Mo again. The man who once consumed the best years of her life now carries memories of his past life too. His gaze is cold, and all he wants is to keep his distance from her.
From mutual dislike to gradually growing closer, from resentment to falling for each other again, Lin Xiyan rediscovers herself on campus and slowly sees the tenderness and sense of responsibility hidden beneath Chen Mo's silence.
Just when she thinks she can rewrite her life, she realizes that what she cares about most is still the family waiting for her in the future...