Romance Town follows the life of No Soon-geum, a woman who works as a housekeeper for a wealthy family. Despite her humble background and the hardships she faces, she maintains a resilient spirit. Her life takes a dramatic turn when she unexpectedly wins a massive lottery jackpot, but she decides to keep her newfound wealth a secret from her employers and those around her, continuing her job as a maid to observe the true nature of the people she serves. As she navigates her double life, she finds herself entangled in a complex romantic triangle with Kang Gun-woo, the son of her employer who has transformed from a chubby, bullied youth into a handsome and successful man, and Kim Young-hee, a wealthy investor. The series explores themes of class disparity, the corrupting influence of money, and the search for genuine human connection, all while blending comedic moments with heartfelt drama.