Lap Man is suspended of his duties after the police received a snippet of a conversation he had with Hau Ko. His colleagues come over to his house to cheer him up and offer moral support. After they leave, Pak Kiu tell Lap Man that he brings this mess upon himself. If Lap Man had heed his warning and stay away from Hau Ko, Lap Man would not be in this mess. Lap Man is upset with Pak Kiu and leaves the house.
Lap Man goes to the comic place where Yau Yau is working and hang out until closing time. He refuses to go home and ends up staying over at Yau Yau's place instead.
Hau Ko calls for a meeting and propose some changes within the triad. He request that the triad seniors submit their earning reports every month. Tin Chat disagrees with the new rule because he has been spending the triad money for his own benefit.
Due to his "battle" with Tin Chat, Hau Ko decides not to visit Yau Yau for the time being as he is afraid that she might be in danger. Sam Jie visits Yau Yau on his behalf and tells her about it.
Lap Man has been continuously staying at Yau Yau's place. As he is on leave, he offers to help her pose as the lucky prince for her blog content. They pretended to live a life of luxury. However, Yau Yau thinks the content is not interesting enough and suggests that the blog needs more exciting and romance related content.
As Yau Yau was drenched when taking photos for her blog, she falls sick. Lap Man takes care of her and even cooks porridge for her.
Pak Kiu request his superior, Tam Sir (also Lap Man and Pak Kiu's former trainer in PTU), to be Lap Man's defense officer during his hearing. Tam Sir agrees to consider Pak Kiu's request. After the hearing, Lap Man thanked Tam Sir for being his character witness. Tam Sir tells Lap Man that it was Pak Kiu who asked for his help.
Lap Man asks Yau Yau out to celebrate and tells her that he will be moving home soon. Yau Yau is sad when she hears that and drinks a lot. Lap Man sends her home but Hau Ko sees the two of them on the street. Hau Ko warns Lap Man to stay away from Yau Yau.
Wu Sir (formerly NB but now in O-Kei, Organised Crime and Triads Bureau) meet up with Lap Man and asks him to consider being an undercover cop.
Wu Sir asks Lap Man to think it through before agreeing to be an undercover cop as it is a dangerous mission and requires that person to make many sacrifices. If Lap Man agrees, he has to sacrifice his friends, severe ties with them and also give up on his family and love life.
Hau Ko asks Tin Chat for the sum of money he owes Chun Hing but Tin Chat doesn't give a damn. Hau Ko offers to only take back 70% of the money Tin Chat owes but Tin Chat turn a deaf ear to everything Hao Ko says. Hau Ko and Laughin trap Tin Chat is a sauna room and turns up the heat. Tin Chat was stuck in the room and called for help but no one was there. A very dehydrated Tin Chat was finally let out by Laughin. Hau Ko orders Tin Chat to cough up the money or else...
Chiu Sir noticed a suspicious character loitering outside a jewellery store. He decided to check on that person but lost track of the person. Back at the police station, Chiu Sir ran into Pak Kiu and Yuk Bo. He challenged Yuk Bo to a "brick hill" run i.e. running up a hill carrying a bagful of bricks. Pak Kiu encourages Yuk Bo and she accepts the challenge. Halfway up the hill, Yuk Bo felt breathless. Chiu Sir gave her some tips on how to conserve energy while running. Pak Kiu run alongside her to offer support. Finally Yuk Bo managed to reach the finish line seconds ahead of Chiu Sir.
Sam Jie's maid's mother is ill so she took a few days off. Sam Jie goes to the supermarket to get her own groceries and runs into her mother, Fa Si Lai. At first the two of them were quite distant, but when Sam Jie asked Fa Si Lai for cooking tips, they talked more. Fa Si Lai also offered to go over to Sam Jie's place to show her how to cook. During dinner, Fa Si Lai accidentally brings up the past and Sam Jie becomes upset and withdraws to her room.
Pak Kiu and Yuk Bo noticed a man acting strangely, taking photo of a plant. They investigate further and realise that people are stealing plants and selling them off for a good price. While stalking the man, they see Chiu Sir on his brick hill run. The three of them cooperate well and successfully catch the thief. When going down hill, Chiu Sir notice another suspicious man, the same one he saw outside the jewellery shop earlier.
Chiu Sir quickly call for back up. As Pak Kiu's trekking team is nearby, Pak Kiu and Yuk Bo go and help Chiu Sir. Unfortunately, Chiu Sir was discovered and taken as a hostage. The suspicious persons are illegal immigrants and are armed. They opened fire at Pak Kiu and Yuk Bo. In the midst of the shoot-out, Chiu Sir managed to grab the gun of one of the immigrants. It was Yuk Bo who fired the last shot and killed the last immigrant who tried to escape.
On the day of Pak Kiu's interview (for promotion), he received news that Lap Man's internal inquiry is not over. There are new evidence that he had helped Hao Ko to deliver drugs before. The panel is requesting that Pak Kiu testify again. Lap Man asks for a favour from Pak Kiu; hoping that Pak Kiu will help him keep the secret but Pak Kiu believes that he has to tell the truth.
The result of the internal inquiry is out and Lap Man has been sacked from the police force. Lap Man blames Pak Kiu for betraying him and telling on him during the inquiry.
Yau Yau tries to call Lap Man but she could not reach him. She was worried and checks with Pong (her employer and Lap Man's friend). Pong told her that Lap Man has been sacked from the police force. She leaves a message of hope on her blog for "Lucky Prince"
La Ba called Yau Yau and Lap Man to pick him up from prison. Lap Man asks La Ba if there is a need to call both of them to pick him up together. La Ba reasons that he is not sure if either one of them would not turn up and he has no money. Lap Man avoids Yau Yau and acts coldly towards her.
Yau Yau calls Hau Ko out for fishing. Hau Ko is very happy that Yau Yau made the first move to see him. Hau Ko invites Yau Yau to move in with him and Yau Yau accepts. Yau Yau tells Hau Ko about Lap Man's condition and hopes that Hao Ko will help Lap Man. Hau Ko went to look for Lap Man and offers him a position at Mega Disco, but Lap Man declined.
Pak Kiu and Yuk Bo have now rejoined the E.U. team from the trekking division. While on their rounds, they discovered that Lap Man is now working together with La Ba, collecting illegal parking fees on the streets.
Over dinner one night, Sam Jie confesses to Fa Si Lai that she has a dream to open her own dessert shop. Coincidentally, Fa Si Lai also has a dream to open her own restaurant. The mother and daughter decide to open a restaurant together, with Fa Si Lai cooking the dishes and Sam Jie providing dessert. They go scouting for a shop but Fa Si Lai lost her purse. Sam Jie accompanies Fa Si Lai to the police station to report her missing purse.
At the police station, Sam Jie sees Pak Kiu and Yuk Bo receiving compliments for their good action when apprehending To Lik Tin. She quickly walks away and Fa Si Lai chases after her. Yuk Bo knows that Fa Si Lai is at the police station and also follows Fa Si Lai out. Yuk Bo does not want Fa Si Lai to mix with people from the triads even though Fa Si Lai informs Yuk Bo that Sam Jie is a relative of theirs. Sam Jie lied to Yuk Bo that she is her cousin sister to prevent Fa Si Lai from being in an awkward position.
Fa Si Lai secretly goes off to meet up with Sam Jie without Yuk Bo's knowledge. However, Yuk Bo receives a call from the real estate agent and realises that Sam Jie and Fa Si Lai are opening a restaurant together. She goes to Sam Jie's house to confront her. Sam Jie assures Yuk Bo that she would not meet up with Fa Si Lai anymore in the future.
Lap Man and La Ba go to Mega Disco hoping that they would bump into the leaders of Chun Hing. La Ba discovers that Laughin is there to celebrate the birthday of one of his followers. Lap Man and La Ba asks for a chance to wish the birthday boy. Laughin takes the opportunity to humiliate Lap Man and even forces him to take ecstasy pills and drinks lots of alcohol.