Im Chi-Woo never wanted to become a good daughter, a good daughter-in-law or a good wife, but she sacrifices herself to take care of her family. She is married to immature Park Wan-Seung and she works several part-time jobs to support her family. Under her difficult situation, she keeps smiling and maintaining her positive attitude. Choi Jin-Yoo is a divorcee and he has a daughter. He works hard and tries live positively for his daughter. He encounters a nightmare like scenario.