Jin-ae (Eugene) works hard to make money only to end up spending it on her family, and her mother San-ok shows so much affection towards her first son only. Jin-ae then meets Kang Hoon-jae (Lee Sang-Woo), who coincidentally is the son of her boss who she admires, and marries him. While experiencing difficult times with her mother-in-law, Jin-ae begins to understand her own mother for the first time.