High school life came as expected. Childhood sweethearts Hu Ling, Yuan Yuan and Yang Yi were admitted to different high schools. In the second middle school, the quirky Hu Ling met Yuan Yuan's mysterious boyfriend Shen Chenguang. The two unknowingly liked each other, but reluctantly separated from Yuan Yuan because of their shame. After the college entrance examination, Shen Chenguang went abroad, Hu Ling and Yuan Yuan went to the Imperial Capital to study together, while Yang Yi stayed in City A. When they first entered college, they met Du Mubai, a senior student at Beijing Film Academy, a genius director who was obsessed with obsession. Little did they know that this was the beginning of a nightmare. Hu Ling and Yuan Yuan relied on each other in college, but they fell in love and killed each other because of an episode in high school. During the confrontation with Du Mubai, the two eliminated their estrangement and joined forces to expose his crime. After graduation, Yang Yi came to work in the imperial capital, and the three of them returned to the time when they were young and loved each other. Hu Ling and her boss Jay developed a relationship, Yuan Yuan and psychiatrist Lu Yunfei became close friends, and the sudden appearance of Shen Chenguang broke the originally peaceful life. Lu Yunfei was Hu Ling's brother next door when she was young. When Hu Ling was in her third year of junior high school, Lu Yunfei left her without looking back. She once said to him, I really want you to experience what it feels like to live your life carrying the lives of others...