Qi Shan and Zhou Zan are childhood friends since young due to the close relationship between their families. However, Zhou Zan's attitude toward marriage took a drastic change due to his parents' divorce, and although he stays by Qi Shan's side, he was unwilling to take a further step in their relationship. Qi Shan grew disheartened after waiting for Zhou Zan for many years and finally decided to accept the dependable and reliable Wei Zi Qian. However, Wei Zi Qian turned out to be Qi Shan's half-brother. At the same time, Qi Shan's good friend Qin Long also falls for Wei Zi Qian. Adapted from the novel "Wo Men" (我们) by Xin Yi Wu (辛夷坞).