A couple arrive by boat to a small fishing village where women dive for seafood. He is returning from a trip and he brings his latest girlfriend, a former hostess, with him. This causes jealousy with a local diver, a woman he had relationship with before he left. Meanwhile the other female divers find ways to satisfy themselves after a hard days work.
Separated from her lover Kenji after he is sent off to war, Sanae is raped by general Takada and gives birth to a girl, Junko, who grows up to become a prostitute. One day, Kenji accidentally meets Junko and confuses her with Sanae, prompting Junko to tell him of her mother's fate. They make love, leaving Junko pregnant with his child - Hiroko, who goes on to have a chance encounter with Takada at a hostess club...