When Darkness Comes Knocking

Ponyo was just a girl who had a royal family, until a mysterious "Darkness" took over her town. Now she must live in poverty in a dirt cottage with the rest of the townsfolk. In 90 days when Ponyo turns 18 years old her parents will kick her out of the house and probably shun her for eternity. Confused and scared, Ponyo scurries to find a life path and arrangements for when her 18th birthday comes. But as she delves deeper into finding a solution to her problem, she discovers terrible secrets and unexplainable truths about her family, the "Darkness" and her town. Why are her parents so set on blocking her from their lives? Does she know too much? What does she know too much about? Will her investigation lead her into hot water? Will she discover something unimaginable? Or will the "Darkness" take over?