Su Nian, a girl from a poor family, was mistreated by her native family since she was a child. In order to avoid the fate of dropping out of school and getting married, she ran away overnight, studied hard, and entered an aristocratic school as a specially invited student. In her gloomy youth, she meets Gu Yanchen, a cold and righteous academic master, and gets acquainted with her sunny and righteous best friend Lin Wan and her gentle lover Wen Jingran. The four of them stay together, redeem each other, and make a young promise to stick to justice and pursue a bright future.
After reaching adulthood, all four of them pursued their dreams: Su Nian became a doctor to save lives and injuries, Lin Wan became a human rights lawyer, and Wen Jingran and Gu Yanchen devoted themselves to public security. The stable life is fleeting. In order to carry out a top-secret undercover mission in Myanmar, Gu Yanchen cruelly cuts off contact with Su Nian and lurks in a dangerous drug den alone.
The peaceful years are fragile after all, and the storm of fate comes quietly, shattering everyone's expectations. The stable and smooth life suddenly took a turn, and an unexpected event broke everyone's rhythm.
The team of four, young and starry-eyed, could not withstand the vagaries of the world. The few people who had been together year after year and talked about everything have gone their separate ways at the fork in the road of destiny, and will never return to the passionate days of their youth. The glimmer of light that broke into youth eventually quietly dissipated, leaving only tender regrets and unforgettable thoughts year after year.
Intention: Sincere tenderness is easy to dissipate, sincere persistence is always accompanied by sacrifice, regret and separation are inevitable normal conditions in life.