Song Ling liked Xiao Qingyu. She thought she could hide it well, but she couldn't fool her own heart. As long as it kept beating, she couldn't forget him. Xiao Qingyu liked Song Ling too, secretly but passionately. Believing she hated him, he gradually kept his distance. Song Ling hid her love in her heart and wrote it in her diary, where no one could find it. When Xiao Qingyu tried to get close to her again, he couldn't find her anywhere. He had no idea what to do with the rest of his life except search and wait. One was afraid to love, while the other hadn't even had the chance to confess. They missed each other for ten years because of a misunderstanding. When they met again... even though everything had changed, their hearts remained the same...