속 엄마없는 하늘아래

13-year-old Kim Young-chul, who reads his mother and is ill, has a father and two younger brothers who cannot afford to live. Neighbors who feel pity for this and sympathize with Dong-jang take the center stage and decide on her stepmother, so that Yeong-chul marries her father. However, the family faces difficulties due to the rude behavior of his younger brother Yeong-i. Her stepmother takes all of her and takes care of the poor children with her patience and sincerity. Eventually, order is established in her home, her laughter spreads, and her children gradually understand her mother.