The story starts out with Sai’s mother, who becomes involved with her boss's son. She gets pregnant but they want nothing to do with her and he later marries another woman from a good family. Fast forward and, as an adult, Sai is now a very confident, independent interior decorator, known for her striking beauty. Chan, a charming playboy who is a top building contractor, is Sai's best friend. Although Chan would like to be more than friend, Sai’s heart is always in the past with her first love, Bee. When Sai knows that her name is in the will of her deceased grandmother, she gets the idea of revenge on her stepmother and her half-sister Looksorn, a shy plain jane who is naive and truly loves Sai. She seduces Looksorn’s fiancée, Pat, who falls for her beauty, and the revenge begins.