The story takes place between a pair of young lovers who are separated due to misunderstanding, but are closely connected by the thin string of fate. When Zixi was reading the diary, which recorded the love process between her mother Zhuxi and Junha, Taixiu asked Junha to write a love letter to Zhuxi. Unexpectedly, Junha and Zhuxi had already known each other and had a good impression of each other; the same triangle exercise was repeated today. It turns out that Zi Xi fell in love with the handsome Shang Min, but Shang Min was already with his friend Xiu Jing.