Summary: The newest movie from Hiyao Miyazaki's Studio Ghibli, Ponyo centers around a goldfish named Ponyo (who has a face like a human) and a five-year-old boy named Sōsuke. Curious by nature, Ponyo ends up stranded on the shore where Sōsuke rescues her. The two immediately like each other, and Sōsuke names the goldfish Ponyo, and promises to protect her forever. Unfortunately, Ponyo's father is temperamental and magical (though apparently he used to be a human?) He orders wave spirits to return her to him (he refers to her as "Brunhilde"), and tries to convince her to stay with him where it's safe. Sōsuke is super sad that Ponyo has left, and worries about whether she's okay.
In order to be with Sōsuke, Ponyo uses her magic to transform into a human, but this causes an imbalance in the world. Now Ponyo and Sōsuke have to go on an adventure to restore balance, and save the world.
I think we can all agree that Miyazaki films are ridiculously cute. For example, Ponyo is obsessed with ham. Adorable. If you don't like cute stories that are magical, and appropriate for children then you shouldn't see Ponyo. Also, I'm pretty sure you don't have a soul. You might want to have that looked at.
Seriously though, the plot of Ponyo is a bit strange, but the characters are wonderful and immediately lovable. It's like "The Little Mermaid" with 5-year-old kids and a nursing home for of sweet old grandmas. If you like Miyazaki films like "My Neighbor Totoro" or "Kiki's Delivery Service" then run super fast to the movie theater to see "Ponyo". It's not Miyazaki's best film, but it's still fantastic (in multiple senses of the word). After you catch your breath, buy a ticket, and then enjoy!