Lin Manman is a beautiful, wealthy landlady, but she keeps her rich second-generation identity from her colleagues and lives like an ordinary office worker. She never imagined that she was even richer than her boss, Lu Xingyao: her family collects rent on the office building his company occupies, and on the apartment where he lives, too.
Through a twist of fate, Lin Manman and Lu Xingyao marry. Then one day, Lin Manman accidentally overhears her in-laws saying she resembles the daughter they lost. Lin Manman and Lu Xingyao begin to question their own backgrounds. One woman who should have been ordinary turns out to be a rich heiress, while a man who should have been a wealthy heir is actually a struggling small-business owner. Meanwhile, Chen Yuran has taken the place that should have been the rich young master's. A tangle of old grudges and tangled relationships rewrites their destinies.