Chen Mo (male, 32 years old). A former criminal police officer from the Yuncheng Criminal Investigation Detachment was transferred from the front line because of a "mistake" in an operation that led to the sacrifice of his teammates. He became a file administrator in charge of cold cases. He looks gloomy, taciturn and inhumane, but he is as observant as an eagle and has unhealed scars in his heart.
•Su Qingyuan (female, 26 years old). A trainee reporter who comes from a privileged background but has a strong sense of justice. She is investigating a "serial corpse dumping case" that has been in the dust for five years. She has keen intuition but lacks social experience, like a deer that has broken into a wolf's den.
• Atmosphere: cold, depressing, real. There is no force to fly into the sky and escape from the earth, only the unpredictability of people's hearts and the pressure of life.
