In the eyes of outsiders, Lin Weixi and Lu Chenguang are the most perfect "agreement couple" in the wealthy circle. They are childhood sweethearts and equally matched. Seven years ago, she took the initiative to distance herself; seven years later, a marriage contract tied them back together. She thought it was just a cooperation where each got what they needed, until she discovered that Lu Chenguang's black notebook, which he never left behind, neatly recorded more than 3,000 memos about her - from the details of her food preferences to her long-forgotten childhood dreams. It turned out that after an accident seven years ago, he suffered from some kind of memory disorder, and she was the only one who he needed to try his best to remember, and the only one who would forget.