1. Incident

In a crime-heavy district of Xizhou, the body of a young man is discovered. Special Investigation Division (SID) officer Luo Weizhao arrives at the scene, where suspicions arise linking this to previous drug-related cases. The scene also draws the attention of Pei Su, the young president of the Pei Group.

2. Conditions of Intervention

Luo Weizhao’s team identifies a suspect, Zhang Donglan, who is connected to a high-profile group and the SID chief. Pei Su, with his own ties to the case, undergoes questioning.

3. Informant

An anonymous tipster, Chen Zhen, implicates a drug ring in his sister’s death. Tension escalates when the victim’s mother confronts Zhang Donglan after his release.

4. Portrait of My Mother

A raid on a nightclub uncovers new evidence. A crucial clue from a surveillance camera refocuses the investigation.

5. Where Does Conceit End Up?

The suspect's alias and tragic past come to light. Luo Weizhao takes a more personal approach to uncover the truth.

6. Peeping Gaze

While celebrating a birthday, Pei Su notices a mysterious gaze following a child — hinting at a new threat.

7. Repro

A new case involving a missing girl echoes a cold case from 16 years ago. Luo Weizhao revisits the father of a past victim for leads.

8. The Next Target

A girl vanishes during Pei Su’s birthday dinner. The team connects her disappearance to a survivor of a similar past case.

9. Enchanted Madness

Clues lead to a chilling diary found with human remains. A twisted relationship and dark secrets emerge.

10. Intern

The investigation uncovers new truths about a cold case, and two new interns, including Pei Su, join the SID

11. Behind the Fame

A corporate heir is kidnapped. Family secrets and power struggles within the Zhou Group surface.

12. Whispers of Revenge

A shocking package from the past revives questions about a suspicious death. The SID follows new leads.

13. That Day Forever

A series of deaths and a fire point to a larger conspiracy. Pei Su and Luo Weizhao uncover secrets buried in Pei’s childhood home.

14. The Mechanism of the Accident

As suspects flee, more details about the Zhou Group’s shady rise to power are exposed.

16. Conversations in the Dusk

Pei Su recovers in the hospital and begins to trust Luo. A mysterious visitor brings insight into Pei’s past.

17. A Final Message from the Mentor

Luo receives a cryptic letter from his late mentor. A new case begins as five students disappear.

18. Unfathomable Footsteps

A mutilated body is found. Surveillance footage identifies a long-wanted criminal from the "327 Case".

19. Their Order

A student reveals a hidden hierarchy of abuse within a boarding school.

20. The Roots of Trust

Interrogation reveals manipulation and cover-ups. A victim tried to expose systemic violence before his death.

21. Exchange of Sincerity

Trust is tested as Pei Su speculates he might be the "Purifier". Luo Weizhao affirms his belief in Pei.

22. Pursuit

The team traces surveillance footage to uncover the criminal’s hideout.

23. Pursuit

A drone-supported raid leads to the discovery of a planted bomb — an ominous escalation.

24. Into a New Chapter

Old injustices resurface. Luo Weizhao uncovers secrets tied to the notorious Seine Riverside case.

25. Emerging Structure

The team discovers the star witness was impersonated. The SID suspects an internal leak.

26. Tracing Memory

Pei Su delves into his subconscious for answers, learning the identity of a missing professor.

27. The Mole

A bug is found on an SID member. Pei Su and others suspect a high-level traitor.

28. Connected Pieces

A repressed memory reveals a key player in past cases. A shocking disappearance changes the game.

29. Confrontation

All forces converge at an abandoned mansion — the site of a past murder. Loyalties are tested.

30. Beyond the Darkness

The final confrontation forces a life-or-death decision. Pei Su and Luo Weizhao face the ultimate moral challenge.