She might find herself in a situation where she has to choose between her life in the sea and her new life at Ever After High. For example, there could be a crisis in the underwater kingdom that requires her presence, but she also has important exams or events at the school. Also, she could start a club at Ever After High for all the students who are interested in the underwater world, and they could plan a trip to the sea together.
A plot could revolve around her trying to break a curse that has been placed on Ever After High's swimming pool. Since she has a connection to the water, she feels responsible. Along the way, she discovers that the curse was placed by a jealous mermaid from another part of the sea who doesn't like that she gets to be part of both worlds. So she has to find a way to make peace with this other mermaid to break the curse.
One idea could be an OC who is a long - lost relative of a well - known Ever After High character. For example, a cousin of Apple White who has been living in a far - off land and has different views on the destiny system. They could come to Ever After High and start a movement to question the traditional ways, causing a stir among the students.
One idea could be exploring Ariel's life after she becomes human. Maybe she has trouble adjusting to some of the more mundane aspects of human life, like cooking or doing laundry. Another could be a story where Ursula's sister comes to seek revenge, but Ariel has to convince her that not all humans are bad.
One idea could be exploring the relationship between Melody and a new mermaid friend from a different part of the ocean. They could go on adventures together and discover hidden treasures.
Another plot could be about the mermaid learning more about the human world in a different way. Instead of just falling in love with the prince, she discovers a hidden talent among humans like music or art and tries to bring it back to the underwater world. This could create a whole new set of adventures and challenges for her. For example, she might have to find a way to communicate with a human artist without revealing her true identity at first.
One idea could be exploring what would happen if Ariel had a secret power she didn't know about until after she became human. For example, she could have the ability to communicate with all sea creatures, not just the ones she already knew. This would create new challenges and relationships on land.
Maybe there's a magical mishap that causes some of the characters' personalities to swap. A Monster High character could suddenly find themselves with the storybook - bound personality of an Ever After High student and have to navigate their new identity while trying to figure out how to reverse the spell. This would lead to some really funny and interesting interactions as they try to fit into a role that's completely different from their own.
Perhaps there's a mystery in Ever After High that only Daring and Rosabella can solve together. There are strange disappearances in the Enchanted Forest near the school. Daring's bravery and Rosabella's knowledge of the forest and its creatures combine to form an investigative team. As they search for clues, they face various challenges like tricky magical creatures and hidden traps. Along the way, they develop a deep bond and respect for each other that might turn into a romantic relationship by the end of the story.
One idea could be that Sessinu discovers a hidden underwater kingdom that is even more mysterious than Ariel's world. Maybe it has different types of mermaids with unique powers.
One idea could be the mermaid's transformation into a human having unexpected side effects on her ability to communicate with sea creatures. Since she's now part of the human world, she might find that her once - effortless connection with the underwater beings is fading, leading to a sense of isolation and a longing for her former life.
One idea could be exploring what would happen if Ariel had a mermaid friend from a different sea kingdom who was more adventurous than her. This friend could convince Ariel to explore uncharted waters and they could discover a hidden underwater civilization. Another idea is to have Ariel meet a magical sea creature that gives her the ability to temporarily transform into a human on land without having to make a deal with Ursula. It could lead to all sorts of new and different adventures for her.