A fish falls in love with a boy, so uses magic to turn herself into a human girl. However, her meddling with sorcery throws the balance of the natural world into upheaval, and the two children race against time to undo the damage while finding a way to let her remain in her new form. Hayao Miyazaki's animated fantasy, with the voices of Noah Lindsey Cyrus, Frankie Jonas, Cate Blanchett and Liam Neeson