In the summer of 2008, after Tang Xiaoxiao received the admission notice from Yifenji University, she quickly rushed to Lijiang with her friend Su Mi, the city she had longed for. Lijiang is indeed the most beautiful ancient city. It seems that every couple who meet here can develop a beautiful love. However, Tang Xiaoxiao does not dare to expect it because her boyfriend Du Ruofei is very worried about her. Although he cannot travel with her because of his summer job, he gets a call every day and a message from time to time. Tang Xiaoxiao, who is excited about playing, has to be distracted to deal with her boyfriend who is far away. It is very distressing. By accident, Tang Xiaoxiao met An Yifan who was also traveling on a self-guided tour in Lijiang. The enthusiastic and cheerful Su Mi invited An Yifan to travel with her. Although she said that it would be safer to travel with a boy, Tang Xiaoxiao, as a close friend, could feel the throbbing in her friend's heart. It seemed that Su Mi was attracted by this girl... After getting along for a few days, Su Mi's enthusiasm for An Yifan remained undiminished. Yifan was unfazed, but the look he looked at Tang Xiaoxiao had a profound meaning. Although the careless Su Mi didn't notice it, the attentive Tang Xiaoxiao saw it. This made Tang Xiaoxiao feel very uneasy. When they finally parted ways, they learned that An Yifan also came from their hometown. After the three of them returned home together, what kind of emotional entanglements would arise...