A drama about a woman in her 20s who is attracting family members from large families who are scattered like sand grains. After the death of her husband, who was a lawyer, she ran a glasses company and raised her four brothers and sisters.

변호사였던 남편과 사별한 뒤 안경 회사를 운영하며 꿋꿋하게 4남매를 길러낸 송 여사를 중심으로 시어머니, 아들·딸, 손자·손녀 등 대가족의 진솔한 삶을 그리는 홈드라마