A selfish girl living on the banks of a stream catches a magic fish one day, and when it pleads for its life, she refuses to put it back. She instead has the fish for dinner and falls under an enchantment, becoming a fish as well! Diving into the water, she meets the Queen of the Fishes who sends her on a quest to retrieve a crown from a giant. Armed with the power to transform into any animal, she goes on her quest and learns a few lessons on the way.