Ku Kaen San Ruk

Songkran (Chakrit Yamnam), a young widower businessman known as the immortal Casanova, is assigned by his father, Ratchasak (Suthep Prayoonpitak), to negotiate the purchase of an orange orchard to build a resort. Songkran manages to buy almost everything, except for the most beautiful plot of land owned by Nai Saeng (Pairoj Jaising), a retired farmer who refuses to sell because he wants to leave it as an inheritance for his two daughters. The eldest daughter, Ingdao (Patcharapa Chaichua), who follows in her father's footsteps as a farmer, inherits the fruit orchard she takes care of, while the youngest daughter, Ingjun (Anyarin Terathananpat), who is studying in Bangkok, gets the exact plot of land Songkran wants.
One day, Ingjun looks for a job in Bangkok with her close friend Marin (Sopitsuda Ittimethin), who came from the same province. However, no one wants to hire Marin because of a scary red birthmark on her face. Eventually, the two apply for a job at Songkran's company. The male employees mock Marin, but Songkran takes pity on her and hires both of them. Marin is deeply moved and secretly falls in love with Songkran.
Later, when Songkran discovers that Ingjun is the daughter of the landowner he has been dealing with, he flirts with her until she falls for him and unconditionally hands over her father's inherited land. Shortly after, Songkran dumps Ingjun to go back to Rosita or Rose (Pimnipa Jittateeraroj), a beautiful actress who returns to reclaim her spot as his real girlfriend. Heartbroken, Ingjun returns home and attempts suicide! Fortunately, Ingdao saves her in time. Ingjun confesses everything to her sister and father. The shock sends Nai Saeng straight into the ICU. This incident causes Wisnu (Thanawet Siriwattanagul), a young teacher and Ingdao's close male friend, to furiously scold Ingjun. The two constantly bicker and become at odds with each other.
However, one day Ingjun gets lost in the forest and injures her leg. Wisnu searches until he finds her, taking good care of her before giving her a piggyback ride home. Ingjun is touched and inadvertently develops feelings for Wisnu, just as Wisnu also begins to feel the same way about her.
Meanwhile, Ingdao seeks revenge and wants to reclaim the land from the swindler. She barges into Songkran's house alone to buy the land back, but is ganged up on and slapped by Naparat (Krongthong Rachatawan) and Ramita (Mantana Himatongkam), Songkran's high-society mother and sister, who then call the police to have Ingdao arrested! Luckily, she contacts Moddaeng (Nadia Nimitwanich), her highly confident best friend, who manages to bail her out. After hearing the whole story, Moddaeng immediately volunteers to help, as she naturally despises playboys.
Moddaeng gives Ingdao a complete makeover, transforming her from a plain country girl into a sexy, gorgeous woman tailored exactly to Songkran's taste, and changes her name to "Daopradub Tubjakkawan." They then head to the racing track Songkran frequents. As expected, the ultimate Casanova falls head over heels for her. The "Beautiful Executioner" operation begins. Daopradub's fiery charm drives Songkran crazy. He even begs his playboy friend, Sia Au (Rangsit Sirananon), to recruit her into his modeling agency. Soon, Daopradub signs with Sia Au, and her edgy, bold personality makes her an overnight sensation. Even Eaw (Jirayu La-ongmanee), Sia Au's young musician brother, falls in love with her.
Ingdao's plan works better than expected. Songkran constantly picks her up and drops her off, continuing to build their relationship. Unable to stand it, Rose violently confronts the junior model, causing a massive scandal that makes the front pages of the newspapers. Songkran's family is furious and orders him to completely cut ties with Daopradub, not wanting him to date such a fierce woman. He disobeys and instead brings her home to meet Peemai (Phusit Iamsuk), his mischievous young son who always chases away his father's women. But this time is different; Peemai gets along perfectly with Daopradub and even urges his father to marry her. With his son giving the green light, Songkran's hopes soar.
When everything goes according to plan, Ingdao agrees to marry Songkran, despite fierce opposition from his family. But on their wedding day, Daopradub announces that she is actually Ingdao Naowarat, the daughter of the landowner the Thanakul family swindled. Everyone is stunned! Songkran feels immense guilt toward Ingdao's family, but no matter what, he insists he still wants to marry her. This leaves Ingdao conflicted because she has genuinely developed feelings for him too. However, revenge must be served. Ingdao returns home with the disputed land deed, leaving Songkran heartbroken, along with Peemai, who is deeply shocked by the events.
Seeing an opportunity, Marin undergoes plastic surgery to remove her birthmark, hoping to win over the heartbroken Songkran. But things don't go as planned; Songkran goes back to dating Rosita. He fakes being sweet with Rosita to the point of announcing their engagement through the media. Heartbroken herself, Ingdao retaliates by announcing her marriage to Wisnu. Nai Saeng agrees and assigns Ingjun to organize her sister's wedding. Wisnu and Ingjun are torn because they are already in love, while Ingdao, the bride-to-be, sits around depressed, making Nai Saeng suspicious.
Meanwhile, after Songkran rejects her, Marin becomes increasingly vicious. She plots to eliminate Rosita, who narrowly escapes death. Marin then kidnaps Rosita and locks her in an abandoned building. She tricks Ingdao into coming over and drugs her. Before Marin can move her, Naparat and Ramita happen to see them, so Marin holds them at gunpoint and forces the mother and daughter to help carry Ingdao into the abandoned building. All four women are locked in the same room while Marin goes to dig a grave to bury them. Ingdao regains consciousness just in time, and they work together to find an escape route.
When Marin realizes they are escaping, she furiously and violently hunts her hostages. Ingdao blocks Marin to let the others run, allowing Marin to physically assault her without fighting back, because she loves Marin like a younger sister. When Songkran arrives to help, Marin forces him to say he loves her. Instead, Songkran declares that the only woman he loves is Ingdao. Marin completely loses her mind and tries to shoot Ingdao! Songkran jumps in to take the bullet, bleeding profusely before her eyes.
How will they overcome this life-threatening crisis? And will Cupid be able to turn this "vengeful pair" into a "pair of lovers"?