The inhabitants of Cape Muroto in Kochi Prefecture depend on fishing for their living, but have no fishing port in their village and so use the port of Uraga in Kanagawa Prefecture as their main port. 22 crew members in a wooden boat of less than 100t fish for tuna in rough seas, 4,500 miles away from home near Christmas Island in the Pacific Ocean, where hydrogen bomb experiments are being carried out. The film focuses on an 18-year-old trainee and his labors aboard the fishing boat for two months, precisely reflecting the fisherman’s daily life.

A modern parable about three brothers whom life has divided as they each went their separate ways. Of their happy childhood and adolescent years together, only a black-and-white photograph remains, capturing the three young men at a table in front of their family home, and memories of the greenhouse that was their father's pride.

The surf pounds against a breakwater on which are visible several people standing. The wall looks to be about 20 feet above sea level and extend at least 100 feet into the water. A large wave rolls picturesquely along the wall toward the shore. Smaller waves follow. Then the scene changes to river water flowing. We see both shores: in the foreground a log and tree branch are visible; on the far shore, there appears to be a low wall with trees beyond it. The camera is stationary in both shots.