Peng Shenghua (played by Lin Haifeng) and Yu Fengzhi (played by Miriam Yeung) have been married for more than ten years. They are already an old couple, and their lives have lost romance and passion. One day, Yu Fengzhi accidentally discovered the blog of her high school classmate Su Bowen (played by Wu Zhaoxuan). An old song reminded her of her past campus days...