On the night when the last snow fell in 2005, Donghuan City Interpol Na Jingyun discovered a shocking secret - Zhou Jingfang, his partner of six years, was actually eight months younger than him, and his true identity was a criminal psychology elite stationed at the grassroots level by the Ministry of Public Security. He was also the orphan of a martyr in a serial case that shocked the country sixteen years ago.
That snowy night, he walked into her world for the first time.
From then on, the two changed from life and death partners to the only light in each other's lives. She taught him how to understand criminal psychological portraits, and he accompanied her out of the haze of sixteen years. When the unsolved case in 1990 is reopened, and the enemy who killed his father may be lurking around, this pair of police CPs will race against time on the tightrope of love and justice.
The story takes 2006 as the core fulcrum and radiates to 2025. Over the past twenty years, they have witnessed every pulse of China's rule of law process, from robbery and trafficking to domestic violence and bullying, from telecommunications fraud to environmental infringement. Olympic security in 2008, special anti-trafficking operations in 2013, and crackdown on gangs and evil in 2020 - they have been fighting side by side under the mark of every era.
When Zhou Jingfang finally took off her police uniform and became a public interest lawyer, when their daughter was admitted to Peking University Medical School, when the truth about her father's murder case that had been pending for 35 years finally came to light - the moment when the truth came to light, it was the deepest response to justice.
This is the growth epic of a generation of criminal guards, and it is also a love letter dedicated to all those who stick to the light in the darkness.
