A seemingly peaceful coastal town has recently experienced a series of bizarre murders. These cases may seem unrelated, but each victim has a strange symbol left on his body, which arouses great concern from the police. Due to the complexity and particularity of the case, superiors decided to send an experienced criminal police captain to lead the investigation.
He is calm, keen, and has a strong sense of justice, but he often blames himself for a failed case in the past, which has become a shadow in his heart.
Background: Li Jin once worked in a police station in a big city. After a failed operation resulted in the death of a colleague, he volunteered to be transferred to this small town.
