After the deaths of his first and second wife, cosmetic mogul Cheuk Gwan Lam tries to turn over a new leaf. As fate would have it, he encounters a resourceful young man known as Ringo Poon, through whom he sees a younger version of himself. Cheuk Gwan Lam develops a familial attachment towards Ringo. The young man also wins the favor of Cheuk’s secretary Rachel Chan, who believes that Ringo would lead the company, Endless Beauty, to success. Rachel, still mourning over the disappearance of her husband Vincent many years ago, drowns herself with work. Endless Beauty, as well as Cheuk Gwan Lam himself, becomes her sole purpose in life. Ringo exploits the trust Rachel has in him, also winning Cheuk Gwan Lam’s approval. Little do they know that Ringo is actually secretly conspiring with a team of talented people on the sly to steal trade secrets from large corporations for money. Ringo has been planning this for years, seeking the best opportunity to take destructive revenge on Endless Beauty.
Rachel sees the reply from “Vincent” the next day and freaks out. She repeatedly calls the number over and over again but the call isn’t going through.
In a meeting with his managers, Cheuk Gwan Lam announces to put 797M project on hold for now. Rachel is out of it at work. All her attention is just on her phone.
Later on in the day, Cheuk Gwan Lam approaches Rachel to check up on her. She tells him about receiving a message from Vincent and shares her worries about missing this one and only opportunity to find Vincent. Cheuk Gwan Lam tries to comfort her and calm her down.
That night at home Mr. Hong badgers Rachel to take a picture of his growth to send to his father. Rachel doesn’t want to and loses her temper with him. But she soon realizes she was in the wrong and apologizes to her son. The two make up and she takes a picture to send to Vincent.
Then she bombards Vincent’s phone with text messages, asking if he’s coming back soon and if he knows this is his wife.
Cheuk Gwan Lam receives all this. He then sends a reply back apologizing. He says he’s the new owner of this number and has seen her periodical text messages and had just responded to her last night without thinking. Rachel deflates immediately.
Mr. Hong comes out and asks if his father responded and when he’s coming back. Rachel lies and says he’ll come back when Mr. Hong gets taller.
The next day, Ringo and Mr. Hong are resting after their bicycling riding lessons. Mr. Hong tells Ringo about seeing Rachel send messages to his father and that his father is coming home soon. Ringo is shocked and gets a little suspicious.
Cyrus finishes up Amber’s discharge from the hospital then goes to find her at Leo’s room. Amber can’t believe that Jau Pui Wu would do such a thing to her ex-boyfriend.
She has a flashback to this time she went out to eat with Leo. He was telling her that he was getting really stressed out with work because of her sister. He tells her Jau Pui Wu takes his works and puts her name on it without any thanks.
At that moment though, Jau Pui Wu enters the cafe and tells Leo to step outside with her. Amber sees the two of them arguing. Then Jau Pui Wu slaps Leo across the face and leaves. Amber is incensed by her actions.
After hearing the story, Turtle finds Jau Pui Wu to be too much. Though he does wonder why she would go so far to steal Leo’s work and put him in the hospital. Cyrus tells them what he found out. Leo and Jau Pui Wu’s company are both set to enter a design competition where the winner gets to work with a famous designer. Amber refuses to let this slide and is determined to get the design back for Leo.
Ringo is against her plan but everyone else is in. Since his team is ignoring his thoughts, he warns them to be careful and not let anyone discover their real identities. Amber is really grateful to the rest of them.
Rachel receives a text message from David at work about a CD being sent to her. She finds it and puts it in to watch. It’s a video recording of Vincent eating another one of Rachel’s cookings. She’s tearing up while watching but quickly stops when she realizes Cheuk Gwan Lam is nearby.
At night, Cheuk Gwan Lam texts Rachel again under the disguise of being a single father of a teenage girl named Martin. He asks if she could teach him how to make scrambled eggs and tomatoes. After she tells him, he asks if it’s okay to stay in touch to exchange advice on how to raise their kids. Rachel agrees and changes the contact name from Vincent to Martin.
Jau Pui Wu leaves her office first while her employees continue to work the night away. Cyrus and Turtle enter disguised as exterminators. They manage to get the rest of the employees to empty the office and begin searching through Jau Pui Wu’s office. Cyrus comes across a bottle of pills and nothing else.
Yan Yan confirms that she has Jau Pui Wu’s office on 24/7 surveillance. If anything happens, she’ll let the rest of them know immediately.
Amber enters the warehouse super pissed off. She’s found out after Jau Pui Wu and Leo broke up, she found herself a rich doctor boyfriend and has pictures to prove it. With the competition coming up next week, Amber is getting anxious and impatient. She’s about to barge into Jau Pui Wu’s house to look for the design when she gets dizzy and sways on her feet. Cyrus takes her home to rest.
Cyrus forces Amber to take a shower at home with he gets her some pain medicine. He accidentally knocks over a few boxes and Amber comes out to help him. Cyrus sees a picture of Amber and Jau Pui Wu when they were younger and notes that their relationship was pretty good. Amber doesn’t think so.
She picks up a few more photos and stares at a more recent photo of her, her sister, and their father. She remembers her father gifting Jau Pui Wu a USB necklace and tells her to put all her important stuff in there. Amber realizes this is where the design must be.
Yan Yan checks it out and confirms that it is on her necklace. They go to her residence and plan to take it. Unfortunately, when Jau Pui Wu comes down from her room without her necklace. Amber stays downstairs to keep an eye out Jau Pui Wu in the cafe while Cyrus goes up to the room to check it out.
He enters and finds the necklace but there’s a password.
A man approaches Amber and asks for direction. She loses sight of Jau Pui Wu afterwards. Amber chases after her and sees that she’s going back to her room. She starts rushing Cyrus.
Jau Pui Wu is about to enter her room when Amber calls out to her. She thinks of a lie to keep the other talking but soon they get into a huge argument that leads to Amber slapping Jau Pui Wu across the face. Jau Pui Wu thinks Amber is crazy and shoves her away before stomping back to her room.
Amber feels great after that slap. Cyrus on the other hand thinks that Jau Pui Wu isn’t as bad as Amber makes her out to be but Amber is adamant to think the other is a bad person.
Amber receives a phone call from the hospital telling her that Leo has finally woken up. She rushes there to see him. Once there, she finds out there was something Leo has told her. Cyrus warns him to confess now.
Jau Pui Wu is at a meeting with the designer Adam Chong. She plugs in her USB but finds that her designs has disappeared. At that moment, Amber enters with the design printed for Jau Pui Wu. Her sister is confused but Amber, who pretends to be a hotel employee, says her excuse and leaves.
Outside, Amber blames Cyrus for not telling her sooner if he knew the whole truth. But she can’t really blame him since every time he brings up Jau Pui Wu’s name, Amber gets all fired up with anger. So he tells her everything now.
The password on Jau Pui Wu’s USB is the date of same picture Amber has of when the two were younger. The medicine he found in Jau Pui Wu’s desk are antidepressants. The doctor Amber claims to be the other’s boyfriend is actually just her general doctor. Also, he realized that the design Amber claims that was stolen from Leo actually belongs to Jau Pui Wu because of the way she writes.
Amber finally realizes that she’s been misunderstanding her older sister all this time. If it weren’t for Cyrus, she would have continued believing Leo and really messed things up.
Jau Pui Wu comes out after sealing the deal with Adam. Amber tries to leave but Cyrus makes her confront her sister. The two go up to the roof to talk. Amber apologizes for everything she did and for misunderstanding Jau Pui Wu all this time.
Jau Pui Wu didn’t know that her employees would do such a thing to Leo and says she will investigate this situation. She also forgives Amber. She has always known what she was getting into and was prepared to face the consequences.
What really happened that day at the cafe where she pulled Leo out from his lunch with Amber was her asking for his work since the client was waiting. Leo said he needed more time and was all willy nilly about it and calls her crazy. That was why she slapped him.
Amber asks Jau Pui Wu why she would use the date of when they first met as her USB password. Jau Pui Wu tells her it’s because it was such a special day. Their relationship mends and all is forgiven.
Later that night, Amber and Cyrus are walking along the streets when Amber spots a devil key chain and buys it. She gives it to Cyrus and tells him it represents her. She demands he brings it with him everywhere.
Ringo is at Rachel’s house teaching Rachel how to make steamed egg. She makes it successfully and snaps a picture to send to her new friend Martin.
Cheuk Gwan Lam sees the message. His helper comes in with dessert and he too snaps a picture of his food. Mani walks by an catches him “feeding his phone”. He sees that she has a package and asks about it. It’s a pair of key chains. He thinks one is for her but Mani explains both are hers.
Rachel is tasked with the project of organizing how their employees can qualify for the next company vacation. She gets stuck and asks Martin for help. Martin gives her a great idea that gets approved.
The idea is a hit with the employees. They all agree that this way, there’s a fair chance for all of them to participate.
Cheuk Gwan Lam returns home and immediately goes to check on Martin’s phone. He sees Rachel’s message thanking him. But suddenly he gets a headache and faints. Ah Sang finds him on the floor of his office.