Koom Pah Kham

Police Lieutenant Non Natee is a highly skilled young officer in the Crime Suppression Division. However, the nature of his profession constantly reminds him of a painful past regarding his ex-lover, ultimately prompting him to quit the police force. He sets his sights on Bangkok to await the return of Saran, his only remaining younger brother. Having lost their parents when they were young, Non loves his brother dearly and financially supported Saran to study piano at a music university in Europe.
Saran returns and surprises Non with the good news that he has found love and is about to marry the woman of his dreams. The only problem is that the woman's aristocratic family is dissatisfied with Saran's social and financial status.
Parinee, or "Khun Nu Lek," is the youngest daughter of Por Liang Inthorn and Khun Ying Sida of the Korawik family, wealthy elites in Chiang Mai. She is currently throwing a massive tantrum at everyone in the house, furious that her family refuses to let her marry the young music student she brought back from Europe. Since she was a child, Por Liang has always spoiled Nu Lek, as he loves his youngest daughter the most. But on this matter, he has to put his foot down because the family's financial situation is rapidly deteriorating. Khun Ying Sida wants Nu Lek to marry a wealthy older tycoon to cover up their social disgrace.
Nu Lek retorts at Darika, her older middle sister, snapping that she should be the one taking responsibility for the family's mess instead. Darika is deeply hurt by her younger sister's endless insults. However, the person who steps in to slap Nu Lek and teach her a lesson about respecting her siblings is Matinee, the eldest daughter of the house. Matinee is calm, composed, and highly respected—and feared—by everyone in the family.
In a fit of impulsive rage, Nu Lek packs her bags and leaves for Bangkok. Por Liang Inthorn is so heartbroken by this that he falls gravely ill. Matinee has to admit their father to the hospital under the care of Dr. Chalat, a promising young doctor who is the prospective provincial hospital director and Matinee's fiancé. Pitying their father, Darika persuades Matinee to go to Bangkok with her to bring their younger sister back to Khum Pha Kham (their estate), hoping it will improve their father's condition.
Meanwhile, Saran intends to introduce his brother to Parinee, his bride-to-be. But while Non is on his way to the appointment, he encounters Darika, who is being harassed by her ex-lover, Kritsana. Non steps in to rescue her, marking the first meeting between Non and Darika.
Ultimately, Saran's highly anticipated romance ends in failure when his lover fails to show up for their appointment. Facing a series of events that completely shatter his heart, Saran tragically decides to commit suicide, bringing unimaginable grief and devastation to his older brother, Non.
Later, as the three sisters decide to travel back to Khum Pha Kham together amidst a relentless, heavy downpour, their car loses control on the road, leading to a tragic and unforeseen event.