Jeong Ho, a head of big family including old mother, wife Mrs. Kim, and 6 children, is in difficulties to support his family due to his crippled body by arthritis. To help her father, Hwang Suk assists her mother's day work at the same time grows to be a she-sailor who fishes on a boat. As Jeong Ho goes to Cheju Island to find a job, Hwang Suk takes on a fishing boat with her brother Min Su. But when her father comes back unexpectedly, her boat is disposed. Police officer Jeong buys a 0.9-ton-boat to Hwang Suk who is disappointed. She defeats difficulties such as engine trouble and comes back with full of fish. In the end, she pays off the debt to Jeong.