The Three GentleBros follows the life of Pimphattra, a wealthy and influential woman who is determined to find the perfect wives for her three sons: Itchaya, Thew, and Arkin. Each son has a distinct personality and a different approach to life, which complicates Pimphattra's matchmaking efforts. As she orchestrates elaborate plans to steer them toward women she deems suitable, the sons find themselves navigating their own desires, personal struggles, and unexpected romantic entanglements. The series explores the tension between maternal expectations and individual autonomy. As the brothers attempt to balance their mother's high standards with their own hearts, they encounter various obstacles, including past secrets, social status differences, and the complexities of modern dating. Ultimately, the show is a lighthearted yet emotional journey about family dynamics, the definition of a 'perfect' partner, and the realization that love often defies even the most carefully laid plans.