Tang Kwai-sim, known as Seventh Master, is a fiercely ambitious businesswoman who thrives under pressure, always pushing herself to the brink and emerging stronger. Chai Shap-chat, a business prodigy, becomes both her partner and rival. Their relationship is a mix of mutual exploitation, strategic alliances, and fierce rivalry, but they are willing to risk everything for each other.
Against a backdrop of the Republic of China era, fraudster Master Kwan is good at disguising himself as a Taoist priest. He flees to Five Races Town as he gets into trouble. Meanwhile, Kwan’s shenanigans – on the pretext of something to do with god Lu Dong-bin – have alarmed Great Master Luzu, who decides to go to the mortal realm to punish him. Through force of circumstance, Dong-bin is stranded in the mortal realm as he loses his mystical power. And then Dong-bin adopts Lui Shek as his new name while keeping Kwan company so as to help him get back on the straight and narrow. During the process, they solve bewildering cases in the village. A mortal and an immortal run into a prostitute called Pak Suet-fa, and they get entangled. Headman Sun Fu steps down. Kwan covertly prevents bully Kam Shi-ho from standing for election. Newly elected Headman Sun Ching-yee implements reforms as he deals with bad deeds committed by Shi-ho. A series of calamities is triggered in Five Races Town.
Pop musician Ding Yat-chun is often troubled by nightmares. He then gets embroiled in a plagiarism scandal, so he moves to a small village for the time being as he also wants to relax. Yat-chun unwittingly opens an old Cantonese opera costume trunk in the village house, releasing the ghost of opera diva Wan Lau-fong. In the 1990s, Lau-fong was a Cantonese opera diva, but she passed away due to some accident. Lau-fong has forgotten almost everything about her human life. And she only wants to track down her crush Kuk Hang-wan from yesteryear. Yat-chun agrees to help as he wants to assist Lau-fong in fulfilling her wish. While they get along, a human and a ghost support each other, and they gradually fall in love. However, someone finds out about Lau-fong's ghost. They are afraid of the truth behind her death being exposed, so they decide to cover up everything at all costs.
Sergeant Ko Fai completed undercover operations many years ago, and there is always a cloud hanging over him. Ko Fai is reassigned to a police precinct that is Crime Squad Station Sergeant Fong Chi-kiu’s territory. While investigating cases, the duo gradually familiarize with each other and develop tacit understanding. Chi-kiu is so dedicated to her job that she has no time for taking care of her family. Her son hangs out with the wrong crowd and gets into trouble. Hotpot restaurant lady boss Lo Sin-man was naive when she was young as she slept with gang boss Law Wai and gave birth to a girl called Lo Siu-po. Fortunately, Ko Fai has always taken care of Sin-man and her daughter. Siu-po becomes a KOL and wants to step into the spotlight by engaging in reckless maneuvers. She gradually descends into the abyss as she reveals how drug dealers go about their business. To protect their loved ones, Ko Fai and Chi-kiu become guardians of the night and are determined to eradicate the villains!
