In Dongyun Town on the northeastern border, a sudden blizzard not only blocked the external access, but also revealed a bloody past that had been sealed for many years. Criminal investigation consultant Bai Bai has extraordinary sensitivity to violent crimes due to childhood trauma, but during the investigation, he meets the mysterious painter Lin Feng. This man who always likes to wear a navy blue scarf is not only the key to solving the unsolved case, but also the unspeakable bond deep in her heart. As serial murders occur one after another, in the process of tracing the truth, they gradually discover that all the clues point to the mining accident that killed both Bai Bai's parents twenty years ago. In the fierce collision of emotion and reason, the two must work together to solve the mysteries hidden behind Blizzard, otherwise the next victim may be themselves.
