Following in her husband's footsteps, Tomosato Eri chose to live as a fisherman. She lived with her only son, Daiki, at the fishing port, but rough fishermen mocked her, saying that she couldn't be a fisherwoman with her white, slender hands. Still, Daiki harbored secret feelings for the beautiful Eri, who always wore a smile. However, one day, on a malfunctioning boat, Eri was raped by the fishermen. Upon learning of this, Daiki took irrevocable action. Then, mother and son, having lost their place in the world, set sail on a forbidden ship into the vast sea...
