Monks from Shaolin Temple come to perform for a charity show in Hong Kong. SUN, who is named as CHING HOI in Shaolin Temple, possess supernatural power. Many reporters rush in to interview him on his unparalleled kung-fu skills. PO claims that we he can perform the kung-fu practiced by SUN but his neighbors are suspicious about it. During the show, SUN meets a quaint man KAN in the filming studio and he subdues him. This reminds SUN of a regrettable experience 10 years ago. SUN meets his ex-boss CHIU and they dine together. SUN reveals that he still cannot let go of a mistake he made 10 years ago. During that time, he had mistakenly killed a young person CHING when carrying out his duty. Thai gigolo GOONG meets YING when going shopping with a rich woman. PO and YING are the landlords of GOONG. PO persuades SUN to stay in his house so that he could kick GOONG away……

SUN is depressed after the death of CHIU. After a postmortem examination, a lot of worms are discovered in CHIU’s body which looks really scary. SUN visits CHIU’s wife WAN and WAN describes the strange condition of CHIU before his death. SUN finds the case very suspicious. GOONG tries to borrow money from KWUN but KWUN beats him fiercely. SUN goes to the hospital to visit KAN. KAN suddenly goes mad. He jumps out of the window and is seriously injured. PONG meets with GOONG. GOONG is actually an undercover police officer. His real name is LUNG and he was appointed by CHIU to carry out investigation on KWUN. PONG asks LUNG to stop investigation but LUNG refuses. LUNG is in debt and his creditors come to damage his house. PO is very angry and asks SUN to give LUNG a lesson. KAN suddenly goes mad again. He runs to the mortuary and eventually dies……

KWUN asks LUNG to make business deal with him. LUNG seizes the chance to set up CCTV in the dinning area. WAN is heart-broken to discover that CHIU was having an intimate relationship with a Thai lady LOY before his death. LOY comes to give money to WAN and claims that she is not CHIU’s mistress. WAN is suspicious about it. SUN discovers that LOY has reminded CHIU to be careful when drinking water in a letter. On the other hand, YUE is investigating the death of three youngsters. She discovers that all of them came from rich families and they used to surf the same website. She suspects that their deaths are related to the flash mob. YING’s good friends HA KAU and PO JE bring her to join the flash mob where they meet a guy called RAY. RAY suddenly comes to visit YING. LUNG arrives and pretends to be YING’s boyfriend so that YING could get rid of RAY. SUN goes to a church to carry out investigation and he meets the bishop ROCK……

YUE assigns LING and MUI to join the church activities so as to investigate ROCK. YUE discovers a special substance that allows the worms to grow rapidly inside one’s body but she couldn’t figure out why CHIU is involved in this. SUN goes to the church alone. A woman suddenly cries for help and SUN discovers that this is LOY. LOY is seriously injured. She finally reveals to SUN that she is actually the girlfriend of ROCK. ROCK requests her to kill CHIU but ROCK is actually carrying out the order of a man who speaks fluent Thai. SUN suspects that this man is LUNG. Meanwhile, somebody attacks him suddenly. YUE goes to the church and brings ROCK back to the police station for further investigation but they couldn’t find anything useful. SUN and YUE go for a drink in a pub. RAY replaces SUN’s water secretly. After drinking the water, SUN feels a strange fever all over his body…

LUNG’s younger sister FUNG calls him and reminds him to come home for dinner because she wants to celebrate for his promotion. On the next day, LUNG joins an alumni gathering where he meets their school beauty ADA again. LUNG enjoys a wonderful time with ADA and he tries to find ways to meet her again. PO accuses LUNG for making his house into a mess during his stay. LUNG promises to claim for compensation from the police for PO. SUN finds the mother of CHING and she has already forgiven him. It takes time to get the compensation from the police and LUNG voluntarily helps PO to renovate the house. He goes to Sai Kung to get some paints with PO and they meet a naughty boy on the street. LUNG gives the naughty boy a lesson but the villager blames him for hurting his son. Luckily, the head of the village comes to mediate between them. YING gradually discovers that LUNG is in fact a good man……