On 9 September 2009, TV reporter YU CHOR-KIN received a message about the song "The One and Only" upon completion of her news coverage of a group wedding ceremony. At her friend's wedding banquet, CHOR-KIN got to meet CHEUNG YAT-HEI, who noticed CHOR-KIN had a stomachache and gave her a chocolate to help. While covering news of a four alarm fire, CHOR-KIN became an eye-witness to the life-and-death situation. Later on, when she was wandering near the sea shore, she encountered LOK TIN-SUNG, who also helped her. Time flies and now it's the year of 2013. CHOR-KIN and YAT-HEI have been in love with each other for four years. Due to his daughter YAU-YAU's bed-wetting problem, TIN-SUNG is late to send her to babysitter YU LO OI-LAM, who turns out to be CHOR-KIN's mother. Today CHOR-KIN becomes a Marketing Manager of a Chocolate chain store.… ...

TIN-SUNG's wife CHOI-YIN, an obstetrics and gynaecology doctor, didn't realize it's a special day for them until she calls her husband and daughter during her breaktime. At midnight, TIN-SUNG thinks of that fire broke out in 2009, whereas CHOR-KIN, after discovering that YAT-HEI doesn't take their anniversary seriously, also recalls the day when she came across TIN-SUNG four years ago. Bringing the matter up again, TIN-SUNG's supervisor JC tries to persuade him to accept the promotion, but TIN-SUNG turns him down because he wants to spend more time with his wife and daughter to take care of them. The first love of TIN-SUNG's elder sister, GOLDEN WONG, goes to TIN-SUNG's company, Warming Heart Furniture, to sell "Golden Water", yet none of TIN-SUNG's co-workers likes him. YAT-HEI sends a message to CHOR-KIN, lying that he has returned home to rest. In fact, he goes to hang out with his partners in a bar.… ...

All her female colleagues ask CHOR-KIN about the new appointed Marketing Director, and they are very excited after learning that their new boss is male. New trainee JIAO FEI, who comes from Guangzhou, goes to CHOR-KIN to report for duty, but LAU-KUEN behaves in a very unfriendly way towards her. GOLDEN yells towards his new next-door neighbour's front door because his door is blocked by his new neighbour's shoe closet again. To his surprise, the one who opens the door turns out to be JIAO FEI. JIAO FEI uses a cup noodle as her birthday cake, making a wish that she must marry a wealthy guy before her 25th birthday. With TIN-SUNG and CHOI YIN going to OI-LAM's home to pick up YAU-YAU, neither CHOR-KIN nor TIN-SUNG can recognize each other although they met one another before.… ...

CHOR-KIN recalls that she and YAT-HEI have been unable to make their Tokyo trip due to various things ever since they started dating each other in 2009, so she cannot help thinking that their best times might have gone forever. On his way to buy some materials to make a lantern, TIN-SUNG reflects on those days when he and CHOI YIN encountered. TIN-SUNG is making the lantern together with his daughter YAU-YAU, who wants to know what kind of colour CHOR-KIN likes. So OI-LAM gives her daughter CHOR-KIN's mobile phone number to TIN-SUNG, letting YAU-YAU call CHOR-KIN and ask her directly. Making an appointment with YAT-HEI to have a Japanese buffet together with her family members at Saturday, CHOR-KIN asks her boyfriend YAT-HEI when they can set out for a trip to Tokyo, but YAT-HEI puts her off with excuses. GOLDEN bumps into JIAO FEI again when walking out of his home, and still has a bad impression to her.… ...

While patrolling at night, security guard CHIU-WING sees that CHOR-KIN is still in her office. Upon CHOR-KIN's return in the next day morning, OI-LAM asks her to look after YAU-YAU for her during the day. CHOI-YIN makes an appointment to have a full body check-up at the hospital, worrying that she might not be able to accompany her husband and daughter to Finland. TIN-SUNG wants to let YAU-YAU sleep over at OI-LAM’s home so that he can go back to the hospital to accompany his wife, and CHOR-KIN agrees. On the first day when the new Marketing Director WONG CHI-TSEUNG reports for duty, all the female co-workers ask CHIU-WING what CHI-TSEUNG looks like. As soon as JIAO FEI hears the others calling CHI-TSEUNG “PRINCE EDWARD”, she requests the Human Resources Department to change her name board to “DIANA”.… ...

Worrying about his wife's illness, TIN-SUNG cannot help bursting into tears, so his daughter YAU-YAU goes to comfort him. CHOI YIN's body check-up report shows that she is diagnosed with Hyperthyroidism, which, according to Dr. CHIN, can be treated by taking medicine. In this regard, TIN-SUNG requests CHOI YIN to take a half year leave to stay at home for treatment and be a normal housewife. While trying out clothes in a boutique, LAU-KUEN cannot help crying out loud, and even discloses to CHOR-KIN that she found out her boyfriend took another girl home. OI-LAM thinks YAU-YAU looks very much alike CHOR-KIN when she was a kid, so she calls YAU-YAU "little CHOR-KIN". YAT-HEI carries some flowers, waiting for CHOR-KIN downstairs at her company, and then walks her home. At that time, TIN-SUNG's whole family also arrives, so OI-LAM invites everyone to stay and have dinner together.… ...

Principal Ms YIU announces that they are going to select a Princess Flower, so YAU-YAU eagerly hopes to be selected. JIAO FEI goes to have lunch at the Shing Yin Restaurant, unexpectedly, GOLDEN and his insurance broker sit next to her and their conversation is overheard by her. All her female co-workers spot JIAO FEI riding in CHI-TSEUNG's car to the company, feeling very envious of her. Seeing that JIAO FEI appears in a TV show, GOLDEN is impressed with her courage, subsequently, he gives her a ticket for a classic songs concert. JC suddenly passes out, and the nurse says that JC needs to have surgery, telling TIN-SUNG to inform his family members. TIN-SUNG receives a phone call from Principal Ms YIU, who informs him that no one has gone to pick up YAU-YAU at school yet, however, TIN-SUNG is unable to contact CHOI YIN.… ...

LO SANG and SIU-MUI seize the opportunity when OI-LAM falls asleep to turn off her mobile phone, and CHOR-KIN knows they just want what's best for her. CHOR-KIN cannot fall asleep as she keeps having YAT-HEI on her mind. In an attempt to shift her focus, she starts learning how to make cookies. CHOR-KIN gives her co-workers some home-made cookies, which inspires CHI-TSEUNG to follow suit and apply it to chocolate. After TIN-SUNG brings back JC's resignation letter to his company, CHI-ON knows that TIN-SUNG doesn't want to take up JC's position, and worries his work in the future won't be as easy as present. LAU-KUEN appears uneasy after recalling that she once sent CHI-ON a message, in which she revealed her affection for him, so CHOR-KIN talks with her to comfort her. Seizing the opportunity when CHOR-KIN is not in her office, CHI-TSEUNG picks up CHOR-KIN's headphone to listen to ......… ...

CHI-TSEUNG asks CHOR-KIN to go to their retail branch with him, following which he even suggests having lunch together. CHOI YIN and TIN-SUNG return to the glass workshop that TIN-SUNG used to work for, during which TIN-SUNG frankly tells CHOI YIN that he noticed she was hiding and crying in the washroom again. Thus, CHOI YIN pours out, one by one, all those words that have long been hidden in her heart. YAT-HEI calls CHOR-KIN to tell her that he and CHI-FUNG have got a job to work in Tokyo, adding that CHOR-KIN can take the opportunity of his absence to go to fetch her personal belongings in his home if there is any. Having seen TIN-SUNG sitting motionless in the restaurant, GOLDEN guesses something must have happened to his family members. TIN-SUNG reflects on his bygones, blaming himself for being such an irresponsible man, so GOLDEN gives him a few words to comfort.… ...

OI-LAM has already sensed there is something wrong between TIN-SUNG and CHOI YIN, worrying that will affect YAU-YAU negatively. Inviting CHOR-KIN to have lunch together in a cooked food stall, CHI-TSEUNG apologizes to CHOR-KIN for wrongly calling her after getting so drunk, and even explains why. GOLDEN feels sorry for TIN-SUNG and CHOI YIN after learning of their divorce decision, whereas CHOI YIN tells OI-LAM and CHOR-KIN that she can no longer look after YAU-YAU, above which she doesn't even know when she will be able to come to Hong Kong again after she returns to Canada. At midnight, CHOI YIN gets up to call back home with her mobile phone and then leaves a voice mail. Simultaneously, TIN-SUNG wakes up at midnight, sending blessing messages to CHOI YIN's mobile phone.… ...

Having found out that CHI-TSEUNG bought a cup of coffee and put it on CHOR-KIN's desk, JIAO FEI as well as other female staff stare at CHOR-KIN in a hostile manner. In the supermarket, CHOR-KIN spots KA-HO standing there motionlessly, so KA-HO reveals to her that his wife is hospitalized after being diagnosed with stage three stomach cancer. In view of this, CHOR-KIN thinks of TIN-SUNG, who also appears differently. Attracted by PAUL's song "I am always there for you", JIAO FEI stands still and watching his performance. After making a wish for his daughter in front of the cake, GOLDEN gives a bowl of mushroom noodles and a cake to JIAO FEI, saying that the day is in fact his daughter's birthday. CHOR-KIN goes to throw away the trash together with TIN-SUNG, during which she encourages TIN-SUNG to vent his grievances.… ...

On Sunday, TIN-SUNG, due to missing his daughter, goes to OI-LAM's home, where he sees CHOR-KIN's macaron fail once again. He then goes to buy a box of macaron, telling CHOR-KIN to pretend it's made by her so as to let YAU-YAU send it out as a gift to the boy she likes. Knowing TIN-SUNG enjoyed making glass at the age of sixteen, CHOR-KIN queries why he didn't regain his interest in making glass. LAU-KUEN begins to groan about herself lacking the courage to send CHI-ON a text message although she thinks of him when she feels alone. Later on, she sees online the show that JIAO FEI participated in, and even hears of her opinion of love and handbags. GOLDEN fears that he might be alone in his old age. Upon his arrival at TIN-SUNG's home, he sees YAU-YAU is feeding his father TIN-SUNG an orange and even giving him a temple massage. In view of this, GOLDEN cannot help crying out loud.… ...

Apart from revealing the reason why her mother is reluctant to get rid of her old phone, CHOR-KIN also recalls and talks about the fire that broke out on 9 September 2009 resulting in her giving up her previous position as a reporter. TIN-SUNG tells CHOR-KIN that he is considering returning to the glass workshop, and get his old designing job back. OI-LAM is wondering why the phone can function normally when CHOR-KIN calls TIN-SUNG, however, the connection failure occurs again when she tries to contact TIN-SUNG by phone. On the street, OI-LAM sees that LAU-KUEN is riding on CHI-ON's motorcycle, and the pair behave very intimately, so she calls and tells her daughter right away. After CHOR-KIN goes to Belgium, TIN-SUNG leaves her a voice mail, telling her to call him whenever she needs to call OI-LAM because OI-LAM's mobile phone is not functioning normally.… ...

While visiting the chocolate exhibition, CHOR-KIN keeps taking selfies and sending them to TIN-SUNG. CHI-TSEUNG points out to CHOR-KIN that she just took the excuse to message to TIN-SUNG. On the contrary, CHOR-KIN expresses that's for the sake of TIN-SUNG's daughter. Having seen TIN-SUNG's photo, CHI-TSEUNG indicates that TIN-SUNG is a glass artist, adding that his ex-girlfriend liked very much the artistic glass works made by TIN-SUNG. However, CHOR-KIN thinks he just mistook TIN-SUNG for someone else. Also due to this, CHOR-KIN gets to learn of CHI-TSEUNG's past love story, wondering how the girl that CHI-TSEUNG cannot forget about looks like. Upon her return to Hong Kong, CHOR-KIN receives a call from YAT-HEI, through whom she knows that he has already a new girlfriend.… ...

CHI-ON accompanies his mother to CHI-FUNG's company, where CHI-FUNG is regretting that he made a wrong decision in 2012. Having heard this, CHI-ON believes that CHI-FUNG was regretting to have established the company in cooperation with YAT-HEI. YAT-HEI refutes that it's CHI-ON whom CHI-FUNG was blaming. While CHI-ON is curious about who has inspired TIN-SUNG to regain his dream career, TIN-SUNG shifts focus on CHI-ON, guessing that his new girlfriend is LAU-KUEN. OI-LAM takes YAU-YAU on an ad hoc trip to Shenzhen, ahead of which she urged CHOR-KIN to go to TIN-SUNG's home and make soup for him. As soon as CHOR-KIN sees TIN-SUNG's new couch, she lays on it and then falls asleep. Looking at CHOR-KIN asleep on the couch, TIN-SUNG recalls the past when he first met CHOR-KIN in 2009. GOLDEN learns that JIAO FEI falls ill, so he cooks some congee with pork liver and Chinese herbal medicine for her flu.… ...

TIN-SUNG is afraid that CHOR-KIN will follow CHOI YIN's footsteps and become unhappy again if he continues to stay with her, whereas YAU-YAU refuses to say "Good morning" to her father because she blames her father for taking her home before she was able to see CHOR-KIN. When giving LAU-KUEN a ride to work, CHI-ON tells her that he wants to listen to her singing. LAU-KUEN promises him that next time she will let him know who the guy was she mentioned in the song. Upon her return, CHOR-KIN only sees YAU-YAU and her family members are waiting for her to have dinner together, however, TIN-SUNG is nowhere to be found. OI-LAM tells her that TIN-SUNG dropped off YAU-YAU here as he knew that CHOR-KIN would be very happy and smiling to see YAU-YAU but, he himself didn't stay.… ...

CHI-ON goes to TIN-SUNG's home to reveal that he has already retrieved his courage and dreams, adding that he would like to join the company in pursuit of his dreams. LAU-KUEN sends CHI-ON a message, telling him not to ride the motorcycle anymore. Shortly afterwards, she receives bad news that CHI-ON is badly hurt in a motorcycle collision. CHI-ON needs surgery which will last for ten hours. After the police officer hands over CHI-ON's mobile phone to LAU-KUEN, LAU-KUEN notices that CHI-ON wrote a message to her ahead of the accident. Upon CHI-FUNG's return to his office, YAT-HEI urges him to go back home to accompany his mother. In fact, YAT-HEI is going to Guam to take photos of the most difficult model to work with in Hong Kong the following day, so CHI-FUNG frankly discloses that he worries that YAT-HEI is not good at getting along with people.… ...

In view of the serious problem between CHOR-KIN and TIN-SUNG, OI-LAM is determined to give them a hand. She shares with TIN-SUNG the past event between her and her husband in hopes of encouraging TIN-SUNG. TIN-SUNG confides his secret to unconscious CHI-ON, revealing that whoever in his eyes looks like CHOR-KIN, whereas CHOR-KIN, just like TIN-SUNG, feels everyone bears resemblance to TIN-SUNG. When GOLDEN accompanies JIAO FEI to the cross-border train station, JIAO FEI notices she has an extra luggage, which contains all the high heel shoes that she threw away at an earlier time. CHOR-KIN is unable to see TIN-SUNG, so she walks on the street that TIN-SUNG and her once walked by. Knowing that TIN-SUNG doesn't see her, she watches her favorite drama and cannot help crying. JIAO FEI secretly puts a voice recorder in GOLDEN's room, and she even recorded a message for GOLDEN.… ...

OI-LAM tells YAU-YAU to go to sleep in her bedroom, so LO SANG is curious how come OI-LAM can now go back to sleep in her own bedroom. OI-LAM proudly shows off, claiming that she has changed as she is not only able to take a taxi but also go back to sleep in her own room. GOLDEN receives a phone call from his wife to inform him that his daughter is going to get married soon, adding that he should cancel their joint bank account to draw an end to their relationship. Having received a message that CHI-ON has awakened from the coma, LAU-KUEN is so excited that she dashes to his ward. Walking with CHOR-KIN to the outside of his home, TIN-SUNG asks CHOR-KIN whether she is sure that she wants to go inside because he is not going to let her go as soon as she enters. While TIN-SUNG is worrying when he should tell YAU-YAU about her real identity, CHOR-KIN considers what's important is whether he can make it instead of when to tell her.… ...