Ponyo on the Cliff by the Sea

Ahhhh!!! New Studio Ghibli!!

The plot is centered on Ponyo, a girl fish with a human face, who leaves her underwater home to become human. She meets and befriends Sōsuke, a 5 year old boy, and begins transforming into a real girl. Ponyo's father misses her and calls on the power of the sea and storms to bring her back. Sōsuke tries to resist him to keep Ponyo with him.