This year, the winter in Xuecheng was extremely cold. In an ordinary residential building, a brutal dismemberment case occurred. Even the battle-hardened criminal police captain Peng Zhaolin could not help but shudder when he saw it. What he could not forgive himself for was that he had passed by the suspect Deng Ligang in the corridor, but who knew that this missed opportunity would last for ten years. Deng Ligang and others roamed around and committed crimes crazily, specializing in kidnapping, extortion and killing "nightclub girls". The serious crime team went to several provinces to pursue the murderer but failed. This criminal gang suddenly disappeared. They used illegal means to whitewash their identities and live a peaceful and happy life. Among their crimes, there was a victim named Zhen Zhen. She found the right time to escape successfully during the kidnapping, but this experience made her unforgettable for a long time. For this reason, she erased the painful memory and worked hard to enter the police academy and become a female police officer. However, Zhen Zhen and Peng Zhaolin often woke up from nightmares. The young girl was like a lamb to be slaughtered, and the miserable cry lingered in their ears. Many years later, police officer Zhen Zhen and Peng Zhaolin cracked a cold case based on an insignificant piece of information. They embarked on a journey of thousands of miles to catch the murderer...