GG Precinct, the much-anticipated sequel to the hit film Marry My Dead Body,
opens with a chilling scene: a night security guard is found brutally murdered,
his body adorned with bizarre symbols and objects. This sets the stage for a new
mystery that will challenge the precinct's seasoned detectives.
The episode picks up after the events of the film, with Wu Ming-han finally back on his feet after being shot. Chang Yung-kang has ascended to the position of precinct chief, while Chubby returns to his familiar role. The precinct also welcomes two new faces: Shao-nien, a method actor turned undercover cop, and Li Shu-fen, a diligent profiler with a unique focus on MBTI personality types.
A major plot point revolves around the appointment of a new captain. Ming-han, confident in his abilities, believes he will be chosen. However, to his surprise, Lin Tzu-ching, the mole from Marry My Dead Body, is appointed instead. Ming-han is furious, blaming her for his previous gunshot wound. However, Tzu-ching reveals that she was working undercover and brought back a large sum of money stolen by a thug. While Ming-han remains skeptical, Tzu-ching's actions have a significant impact on the precinct, as she introduces new policies aimed at increasing productivity.
The security guard's murder leads Ming-han and Chubby to the crime scene. The victim's body is covered in feathers and fish scales, and he is wearing an antler headband. CCTV footage from the crime scene reveals a potential suspect, Chang Po-lun, a resident of the ninth floor who is now missing.
Back at the precinct, Ming-han and Tzu-ching clash over their differing investigative strategies. However, it is Chief Chang who makes a breakthrough, recognizing similarities between the murder and a series of unsolved cases from twenty years ago known as the "Idiom Murders." The original killer, Shui-yan, a strict teacher, was notorious for threatening his students and ultimately carrying out those threats, rearranging the bodies of his victims to correspond with spelling mistakes made by his students.
Chang points out that the recent murder aligns with the idiom "As rare as phoenix and unicorns." The next day, another body is found with a similar modus operandi, this time with pulled teeth and a prostrating position in front of a memorial. Tzu-ching decides to confront Shui-yan, who is now imprisoned and wearing a Hannibal Lecter-esque mask.
To Ming-han's surprise, Shui-yan accurately guesses his past as a bad student. He also manipulates Ming-han's insecurities, playing on his desire to prove himself and protect Tzu-ching. However, a physical confrontation between the two men leads to a temporary truce. Shui-yan analyzes the case files and identifies the second murder as related to the idiom "Thirst for knowledge." He predicts another murder and urges the detectives to be ready.
As the episode concludes, Shui-yan begins writing an idiom on his cell wall, hinting at the killer's next target. Meanwhile, the copycat killer strikes again, leaving another victim at the end of GG Precinct.