Five-year-old Lu Zeyan fell in love with the gentle and beautiful teacher Su Wanqing at first sight in kindergarten. On the day of graduation, he secretly kissed her on the cheek, making Su Wanqing bow her head shyly. This memory became the most profound imprint of Lu Zeyan's childhood. When she grew up, Lu Zeyan became a billionaire CEO, but she never forgot the female teacher who brought her warmth. Relying on vague memories and sporadic clues, he began a long journey to find the person. After going through all kinds of hardships to find Su Wanqing, he found that she might not be happy with her life, or she might be worried about this relationship that spanned many years. Lu Zeyan impressed Su Wanqing with his sincerity and persistence, and eventually the two overcame obstacles such as age and identity and got married.