King Triton and his wife, Queen Athena, rule over the underwater kingdom of Atlantica, which is filled with music and laughter. They have seven young daughters, the youngest of whom is Ariel. The merfolk are shown relaxing in a lagoon above water, and Triton gives Athena a music box. Suddenly, a pirate ship approaches. Everyone escapes except Athena, who is crushed by the ship when she tries to save the music box. Devastated by the death of his wife, Triton throws the music box away and bans music from the kingdom.
Brunhilde is a fish-girl who lives with her father Fujimoto, a once-human wizard/scientist who now lives underwater, along with her numerous smaller sisters. One day, while she and her siblings are on an outing with their father in his four-flippered submarine, Brunhilde sneaks off and floats away on the back of a jellyfish. After an encounter with a fishing trawler (the net of which is scraping the trash-strewn bottom of the harbor), she ends up stuck in a glass jar. She drifts to the shore of a small fishing town and is found and rescued by a small boy named Sōsuke. Shattering the jar open with a nearby rock, Sōsuke cuts his finger in the process. Brunhilde licks his wound when he picks her up and the wound heals almost instantly, much to his surprise. After taking a great liking to her, and thinking her merely a goldfish, Sōsuke renames her Ponyo and promises to protect her forever. Meanwhile, a distraught Fujimoto searches frantically for his taken daughter. Because of his own bad memories of the human world, he believes that Sōsuke has kidnapped her and is in great danger, he calls his wave spirits to recover her. After the wave spirits retrieve Ponyo from Sōsuke, he is heartbroken. He goes home with his mother, Lisa, who tries to cheer him up, to no avail.
Widowed Classics Professor Thomas Bradley (Billy Zane) is about to lose his research grant studying ancient love spells at Oxford University. He knows he is close to a major academic breakthrough and desperately needs more time to complete his research. Thomas is given one last chance to finish his work, and goes to the Greek island of Spetses, where he has been invited to stay at the home of a supportive Oxford don Professor Coulter. Thomas brings along his 12-year-old daughter, Serena (Amber Savva). The house is in tolerable condition, and Serena finds a book about merpeople that has an ancient Greek inscription on the cover.
The film is a modern interpretation of Andersen's fairy tales.
6-year-old Alice lives with her mother and grandmother near the sea and waits for the return of her father. Alice dreams of becoming a ballerina and going to ballet school, but it does not work out. Alice notices that her mother is having an affair with their neighbor. Walking in on them having sex she shouts: "Traitor! Go to hell!", and in retaliation, she burns down the house. After the eclipse of the sun, Alice stops talking. Alice is then sent to a school for mentally retarded children, where she discovers an ability to fulfill her desires, such as making apples fall from the tree. After wishing to move away and causing a hurricane, she, her mother, and grandmother move to Moscow, having sold her grandmother's jewelry to pay for the tickets.
Best friends Hailey Rogers (JoJo) and Claire Brown (Emma Roberts) are upset to know that they will be separated in five days as Hailey has to move to Australia because of her mother's (Claudia Karvan) job. Claire, senisible and slightly naive, looks up to Hailey as a mother figure in some ways, since her parents drowned in a boat accident years before. She now lives with her grandparents by the beach near Hailey, who is more daring and adventurous, in a small Florida town.
In Barbie: Fairytopia, the wingless flower fairy Elina defeated Laverna, the evil sister of the Enchantress, and the Enchantress gave Elina wings as a reward. This film's plot begins shortly afterward with Elina flying through the air, still having trouble believing that she has wings. As the three are flying Dandelion, Elina and Bibble in the air Bibble notice that someone was following them. Bibble tells it to Elina and soon, Elina learns from a young sea-butterfly fairy that her friend Nalu, the merman prince, has been kidnapped by several of Laverna’s Fungi at the Crystal Cove. The banished Laverna is seeking out the Immunity Berry, a berry that causes whoever eats it to be immune to all magic. Since Nalu knows how to find the berry, Laverna had sent her Fungi to force Nalu to lead them to the Immunity Berry.
Harry Potter dreams of Frank Bryce, who is killed after overhearing Lord Voldemort discussing plans with Peter "Wormtail" Pettigrew and Barty Crouch Jr. At the Quidditch World Cup, Death Eaters terrorise the spectators, and Crouch Jr. summons the Dark Mark, otherwise known as the curse "Morsmordre".
The film follows the plot of the TV series SpongeBob SquarePants, focusing on the anthropomorphic sea sponge of the same name (Tom Kenny). SpongeBob dreams about managing the Krusty Krab restaurant. The restaurant is in trouble because a customer has no cheese on his Krabby Patty, but SpongeBob saves the day. He wakes up and cheerfully prepares for the opening ceremony for the Krusty Krab 2, hoping that his boss Mr. Krabs (Clancy Brown) will promote him to manager of the new restaurant built next door to the original Krusty Krab. At the ceremony, SpongeBob is passed over; his co-worker, Squidward Tentacles (Rodger Bumpass), is given the promotion because Mr. Krabs thinks he is "more mature" than SpongeBob.
Shishioh, a popular and successful professional wrestler, builds a large mansion for his wife Asami and their kids. During the housewarming party, Ichijo, an angry competitor, causes a riot that destroys the house. Asami is hospitalized, where she contracts a rare virus that slowly transforms her into a mermaid. Desperate for money to finance his new house and find a cure for Asami, Shishioh agrees to a reality TV show in which he wrestles several competitors in a haunted house. His opponents turn out to be homicidal killers and include a zombie among them. Eventually, Shishioh learns that the television producer infected Asami with an experimental virus in order to get him to compete.
In Edwardian-era London, in the nursery of the Darling home, Wendy Darling (Wood) tells her younger brothers, John (Harry Newell) and Michael (Freddie Popplewell), stories that enthrall Peter Pan (Jeremy Sumpter) and his fairy friend Tinker Bell (Ludivine Sagnier). Life is disrupted when their Aunt Millicent visits the family. Judging Wendy to be an "almost" full-grown woman, Aunt Millicent advises Mr. and Mrs. Darling to think of Wendy's future, saying that Wendy should spend less time with her brothers and more time with her as she learns how to be a proper young lady. The very idea terrifies the children.
Unscrupulous fisherman John Mallick and his assistant Carlo are fishing with soda bombs in open water to harvest coral reefs when they notice a large creature thrashing in the water, Mallick shoots it and discovers that it's a merman. They attempt to collect the body but the vessel is knocked by a powerful force. Mallick sees a figure in the water, pointing a trident at him an he and Carlo escape, without the body of the merman.
Circa 1900, in Ireland, two carnies, Angus Shaw (Rufus Sewell) and his wife Lillian (Carla Gugino), abduct a mermaid (Rya Kihlstedt) and try to smuggle her into the United States. As their ship appears to lose its way, the mermaid begins to show a deadly, carnivorous side.
Ariel and Eric celebrate the birth of their newborn daughter Melody on a ship at sea. Ariel's father King Triton presents Melody with a magic locket. The party is interrupted by Morgana, sister of the deceased Ursula, who threatens to cause Melody harm, using her as leverage to get Triton's trident. Ariel and Eric work together to foil Morgana's plan.
Sabrina travels to Australia's Great Barrier Reef with Gwen, a fellow witch from England, for a week-long vacation where they try to help protect a hidden mermaid colony whose habitat is threatened by ocean pollution, and by local marine biologist Dr. Julian Martin, who is determined to find the colony as his claim to fame. While Sabrina finds a friendship with Barnaby, a "merman" from the mermaid colony, Salem the cat finds a possible romance with another witch-turned-into-a-cat named Hilary, but finds Sabrina's problems interfering with his plans. In order to prevent Julian from launching a search for the mermaid colony, she casts a spell to create a storm to keep him in port, which succeeds except that a lightning bolt knocks Sabrina unconscious, and when she comes to she learns she has lost her powers, at least temporarily.
Cody Griffin is an adopted teenager; his birth mother is a mermaid who left him on the Griffins' boat when he was a baby to avoid being captured. As she left, she was spotted by Mr. Wheatly, a fisherman who became obsessed with finding mermaids. Cody establishes himself as a quick swimmer in the town he lives in, and has a girlfriend named Sam. He's under a lot of pressure from a big swim meet coming up and because he's failing biology, he's partnered with Jess Wheatly, the class geek who is a marine biology expert.