When Preem Primala, the trusted secretary of Thee Chonlathon, decides to resign to live a life free from constant work, Thee tries everything—offering her countless deals to make her stay. But nothing works. In the end, will Thee really have to let her go?

Preem is forced to accept the condition of training her assistant for three months until she passes probation. During that time, Thee plans to use every moment to make Preem change her mind. Confident in his “brilliant” ideas, he begins executing plans that, to everyone else, look utterly bizarre.

Out of the blue, two men enter Preem’s life—either of whom might be the soulmate a fortune teller once predicted. Thee starts to panic when he remembers Preem once said she’d date someone and then marry right away. So Thee blurts out that if Preem’s going to get married, it has to be to him.

As if stopping Preem from quitting wasn’t hard enough, Tham, Thee’s older brother, returns to stir up even more trouble. Thee tries everything to keep Tham and Preem from meeting—but fate has other plans. When Thee takes Preem and her pet goldfish to the vet, she unexpectedly comes face-to-face with Tawan once again.

Thee orders the office to be decorated in a Valentine’s theme to impress Preem. Preem arranges a meeting with the writer Morpheus, only to discover that Tham and Morpheus are the same person. Thee then asks Preem out for a pre-Valentine’s dinner to beat Tawan to it—but what he ends up seeing is Preem with Tham.

Thee tries to make up with Prim, and the two finally clear the air between them. Meanwhile, Tham starts pursuing Prim by taking her and their friends out for dinner. When Thee finds out, he shows up to stop them, and tension rises between the two men—until the office staff investigates and discovers that Thee and Tham are actually brothers.

Preem gave Tham a diary to help him regain his memories. Thir confessed to Preem that the reason he courted her was because he truly liked her. Thee planned to cook a special meal, but ended up burning all the meat. So Preem prepared a simple yet very special meal for Thee for the first time.

Jinnie wanted to get back together with Thee and begged Preem to help her. So Preem began to distance herself from Thee. Thee acted sarcastically toward Preem to make her realize her true feelings. Phat used Thee’s phone to send a message asking Preem to come to Thee’s house. Preem hurried over, already knowing the answer in her heart.

When Preem finally agreed, Thee started helping her with work because he didn’t want her to be exhausted. This led everyone to misunderstand that he was about to be fired. Tham then invited Preem to a press conference and, during the interview, publicly revealed who the person in his book was — declaring that he intended to make Preem fall in love with him.

Prae opened up and gave her blessing for Thee and Preem to be together. Preem followed Thee back to the client event in Spain, where she encountered Tham — who had just discovered that the child who was kidnapped years ago was actually Thee. As fragments of her traumatic memories began to resurface, Preem went into shock and fainted.

"Thee confessed everything — that he had remembered Preem from the very beginning. Even though she couldn’t remember him, he was grateful that they could at least be together now. He wrapped up all his work and announced for everyone to finish early, as he planned to celebrate his birthday with Preem — for the first time as her boyfriend."

Thawat and Chonlada ask Thee to reveal the truth. They sympathize with him for carrying his pain for decades. Thee reconciles with Tham, and the brothers finally open up to each other. However, Thawat worries that Thee’s relationship with Preem could affect the family business and asks them to break up.

Rumors spread that some employees are secretly dating. Thee wants to make their relationship public, but Preem isn’t ready, fearing it will be hard to maintain her professional image. However, her father’s illness makes her realize that life is short and she should follow her heart and do what truly makes her happy.

Thawat tries to find someone of proper social standing for Thee. Chonlada reminds him that a parent’s duty is not only to ensure their child’s success in business but also in love. She then boldly declares in front of Thawat that she’s on Team Preem

Preem decides to resign and move back to her father’s house, ending her relationship with Thee. Both are heartbroken, still deeply in love. Thee opens up to Phot, declaring his decision to be with Preem. He renounces his family name and proposes to Preem once again.

Finally, Preem and Theer got married. It was a wedding attended by people they both loved and who loved them both. However, the rain poured down relentlessly, making a mess. Despite this, Preem and Theer felt that simply being together with their loved ones made it the most perfect wedding ever.