16-Year-old Gu Nianchen has a twin brother. The two have almost the same appearance, but have completely different personalities. However, Zuo Chenxi, a strange boy, provoked Gu Niancheng, which caused his congenital heart disease. He was extremely angry with Gu Nianchen, who had always loved his younger brother. Ye Jinchuan and Tang Guo, friends who had grown up together, said they wanted to "take care of" Zuo Chenxi. The fate of the several teenagers was linked from then on...