The heroine Jiang Yao lost her memory accidentally and was kept by the business tycoon Shen Zhiyan as a substitute for "Bai Yueguang" for five years. She works hard to learn each other's preferences, handwriting, and even micro-expressions. Until by chance, she discovered the diary collected by Shen Zhiyan and claimed to be left by "Bai Yueguang" - and the handwriting on it was exactly the same as before she lost her memory. She followed the clues and uncovered a heartbreaking truth: she was the "deceased" Bai Yueguang. The "death" that year was a trap set up by Shen Zhiyan to protect her. After losing his memory, he was paranoid and personally molded her back into a replica of her "past her" because he could not bear the pain of loss.
