Qin Erning was hospitalized with appendicitis when she was in junior high school, and met Song Wan and Lu Jiaoyang. Song Wan returned to Hong Kong after being discharged due to her parents' work reasons, and cut off contact with the two. When she grew up, Song Wan became a star. By chance, she sent a message to her old mobile phone number and got a reply, and the other party was Qin Erning. Song Wan met Er Ning again by chance, but did not reveal his identity. He continued to contact Er Ning as Brother Wanzi, and on the other hand, he became friends with Er Ning as Song Wan. The ignorance in childhood turned into love for Er Ning, but Er Ning has always liked Lu Jiaoyang. Lu Jiaoyang, who is more casual about feelings, has always regarded Er Ning as a good friend. After Lu Jiaoyang and Tang Qian got together, Er Ning finally recognized the reality and gradually gave up on Lu Jiaoyang, and Song Wan's constant companionship made Er Ning fall in love with him unknowingly. When everything seemed to be going on the right track, Lu Jiaoyang discovered that what he really loved was Er Ning. . . How will the relationship between Er Ning, Song Wan, Lu Jiaoyang and Tang Qian continue?
Conception: