Her husband evaporates, leaving behind debts... Yuko and Takuya, left behind, rely on their only relative, their brother-in-law, and visit a certain beach house. - However, his brother-in-law refuses to give him food, let alone a bed. - ``Mom, I'm going to become an ama diver!'' Yuko decides to become an ama diver because she can't change her back and stomach. - After being battered by many rough waves, Yuko is finally able to harvest seafood. - One day...Yuko dives into the sea and discovers a very rare pearl...