During her three years in high school, Xu Yuan slowly fell in love with Jiang Chengping, the melancholy young man sitting at the back table. In order to get closer to him, 18-year-old Xu Yuan also applied for medical school at Nancheng University. Every time A Yuan took a step closer, Cheng Ping would take a step back. As everyone knows, when the boy was 15 years old, on that snowy afternoon, his heart was already moved. The girl is his last resort, his love but cannot. Many years later, the two met again in Syria. Jiang Chengping had fulfilled his childhood dream of becoming a Doctors Without Borders, fighting against death in a war-torn city, but Xu Yuan became what he wanted. The two went through hardships and survived, inheriting the beliefs of the previous generation in this ruined city.