Leh Phummaret

Phumaret Phomornchai is a handsome and dangerously charming young man, the heir of Mr. Phong Phomornchai. His father was once a business rival of Mr. Suwan Worathip. After losing a lawsuit, Phong’s family went bankrupt. Although he was at fault, Phong felt no remorse and instead harbored deep resentment. He returned to Songkhla and raised his son to seek revenge against the Worathip family.
Phumaret’s mother had already passed away from heart disease. When news of Suwan’s death spreads, Phong orders his son to carry out his “filial duty”—to destroy the Worathip family and reclaim their lost wealth.
After Suwan’s death, his large real estate company is inherited by his three daughters:

• Tatong, the eldest, nearly 30, serious and decisive like her father, becomes the new president.
• Roithong, the second daughter, serves as her right hand.
• Rinthong, the youngest, only 20, gentle, sensitive, and domestic.

The strong bond between the three sisters is widely admired in society.
Phumaret travels to Bangkok to execute his revenge plan, entering their lives under the guise of being the son of his father’s old friend. With the help of Narucha, he easily gains access to the family. His charm captivates the sisters, leading to him being hired into their company after the funeral.
Soon, all three sisters—Tatong, Roithong, and Rinthong—fall in love with the same man: Phumaret.
Roithong grows suspicious of his motives, especially after hearing concerns from Mr. Chom, the family’s longtime lawyer. Though she senses something is wrong, she keeps her doubts hidden because she, too, has feelings for him.
Phumaret manipulates Tatong’s love effortlessly. She becomes completely devoted to him—giving him a high position, a generous salary, even allowing him to live in the house and share her workspace. Believing he truly loves her, Tatong gives him everything. When he whispers that he loves her, she boldly announces her intention to marry him, ignoring all warnings.
Meanwhile, Phumaret secretly seduces Rinthong whenever Tatong is busy and Roithong is away. Rinthong, innocent and trusting, falls deeply under his spell and willingly becomes his lover—even before his marriage to Tatong.
Roithong quietly continues to observe him. On the wedding day, Phumaret confesses his love to her instead. Heartbroken and furious, she slaps him and walks away.
After the wedding, chaos erupts. Rinthong becomes pregnant and accuses Tatong of stealing her husband, presenting a marriage certificate as evidence. As she attempts to flee with Phumaret, Tatong, overwhelmed with rage, grabs a gun and tries to shoot him. He wrestles it away just in time. In a frenzy, Tatong then grabs a knife and repeatedly stabs Rinthong to death. She turns to attack Phumaret as well, but cannot bring herself to do it. Instead, she breaks down—crying, laughing hysterically—and runs out of the house, losing her sanity.
The police arrive and collect Rinthong’s body.
Phumaret finally realizes the destruction he has caused—three lives ruined: Rinthong is dead, Tatong has gone insane, and Roithong becomes so disillusioned that she vows never to marry. Yet, the law cannot punish him.
Consumed by guilt, Phumaret returns to Songkhla with his father. Regretting his sins against the sisters, he decides to enter the monkhood to atone—and vows never to leave it.