In the winter of 2013, dark clouds and fear enveloped the entire Sioux City. The police in Sioux City are facing unprecedented pressure. The deceased's lower body was cut off and his eyes were gouged... The murderer's series of arrogant and cruel serial killings have made the people of Sioux City panic. Cui Wen, a 30-year-old criminal police officer, also participated in the investigation. With the heavy snow coming, can he complete the regrets of 10 years ago this time...
