Dear My Secretary

Preem Primala, the devoted secretary of the perfect young CEO Thee Cholathorn of Thiranon Group, has decided to resign in order to live a life free from the 24/7 work grind she’s devoted herself to for so long. Thee is left completely stunned. Even with an offer no one could easily refuse, he still can’t convince Preem to stay. In the end, does Thee really have to let her go for good? There’s no way he’s starting the New Year like this!

Preem has no choice but to accept the terms that feel more like a punishment. Even though a new secretary has already been hired, her resignation is pushed back another four months so she can train the assistant secretary to pass probation. During those four months, Thee is determined to create heart-warming moments to make Preem change her mind. He starts plotting what he believes are brilliant plans—but honestly, you could tell from Mars that they’re not. Even his close friend, Director Pat, can’t make sense of them.

Preem announces she’s ready to date someone and get married, so Thee shows up with a huge bouquet to surprise her—only to find out she’s allergic to pollen. Unfazed, Thee joins a staff volleyball match to show his “dedication” to employees, but his over-the-top spike ends with a twisted ankle. While Preem tends to his injury, Thee gets visibly jealous of her closeness with Kawee and blurts out that if Preem is going to marry anyone—it has to be him.

Preem rejects the marriage proposal, so Phat has to step in to help according to the plan Thee has devised. On his own, trying to keep the plan to retain the secretary already proves challenging. Tham, his real older brother, even comes back to stir up old emotional wounds. Thee tries to prevent Tham from meeting Preem, but in the end, they do meet. Thee and Tham argue over past issues. Later, Thee visits Preem at her house. While Preem is tending to his wound, a tender moment occurs, snapping Thee out of his daze when he notices Preem’s goldfish is sick. Thee then takes Preem and the goldfish to the vet, which leads Preem to encounter Tawan once again.

Thee orders the office to be decorated in a Valentine’s theme, hoping Preem will like it. Preem sets up a meeting with the writer Morpheus to discuss work details, only to discover he is actually Tham. When Thee learns that Tham is Morpheus, he cancels all plans that night. The next morning, however, he instructs Mind to coordinate the event as originally planned.

Preem feels confused and emotionally unsettled by recent events. Thee tries to make amends by indulging Preem, allowing them to reconcile. Meanwhile, Tham makes a bold move to woo Preem by taking his friends out for a meal. Thee notices and intervenes, leading to tension between the brothers. Office colleagues investigate and discover that Thee and Tham are siblings. Then, during Earth Hour, an incident shocks Thee to the point of losing control, causing Preem to grow increasingly suspicious that Thee might indeed be the prince she has been searching for.