Lin Ying, 26, works in an ordinary company in the United States and lives a peaceful and happy life with her white boyfriend Tang. However, a sudden letter changed everything. It turned out that five years ago, there was an accidental explosion, and she was implicated in losing her past memory. She was able to start a new life with the support of her childhood sweetheart Wu Haili. This letter brought back her dusty memories, leaving her confused and filled with doubts. Whether it's her family, her own identity, or the mysterious man, she has to find out. What will be the outcome waiting for her, justice, revenge, love, where will she go...