Xue Wan and Mu Yanqing were once a perfect couple in the eyes of everyone, and they have been together for ten years. Initially, their union was an enviable one. However, as time goes by, the trivial life gradually erodes the sweetness they once had. The complicated and trivial matters in the family were like fine needles, piercing Xue Wan's heart bit by bit, causing her dissatisfaction with Mu Yanqing to grow quietly like a vine. Gradually, even the idea of "separation" appeared in her mind more than once. A sudden accident, like a mysterious door of time and space, sent Xue Wan back to her college days, the innocent years before falling in love with Mu Yanqing. Xuewan, who has regained her youth, is full of expectations and is determined to rewrite her life and change everything that once made her regretful. However, Mu Yanqing in this life seemed far less simple and simple than in his memory. An indescribable mysterious aura lingered around him...