Yurie Matsushima chose to follow in her husband's footsteps and live as a fisherwoman. Living at the harbor with her only son, Daiki, she was mocked by the rough fishermen: "A woman with pale, delicate hands can't handle fishing." Yet despite their taunts, the beautiful Yurie always kept her smile. Daiki, in turn, harbored secret feelings for her. One day, Yurie was assaulted by the fishermen aboard a broken-down boat. When Daiki learned the truth, the emotions he had long suppressed exploded. In their moment of despair, mother and son board a forbidden vessel adrift upon the vast sea.