Look Mai Klai Ton (2016)

On her deathbed, Supa reveals to her daughter, Rasa, that her real father is Chalerm, her wealthy former boss who had assaulted her. She urges Rasa to use a ring he once gave her as proof of her identity, but Rasa’s brother has stolen it. Determined to confront Chalerm and demand an apology, Rasa seeks him out. Chalerm, a jewelry tycoon, rejects her claims, believing she’s after his fortune, with support from his wife and eldest daughter, Wan. Only his younger daughter, Sasikarn, believes Rasa and treats her kindly. Sasikarn’s boyfriend, Chanon, is tasked with keeping Rasa away, but while he distrusts her, his brother Apirak falls for her. Chanon also struggles with his mother’s return after abandoning him and Apirak two decades earlier. Rasa and Chanon can't help being attracted to each other, but they find themselves torn between love and responsibility towards family.