A newcomer who just graduated from the police academy was assigned to the criminal investigation detachment of the third-tier city "Jiangcheng". He is introverted and has keen observation but lacks experience. Because he witnessed his mother "accidentally" falling from a building in his childhood (actually an unsolved case), he has an almost paranoid obsession with the "truth". From relying on his predecessors and being hesitant and timid when facing cases, to gradually leading the investigation independently, daring to face the darkness of human nature and the rules of the system, he finally uncovered the truth about his mother's case and became a true "light chaser."
