A really interesting plot could be that Heidi stumbles upon an ancient prophecy. As she tries to understand it, she has to face challenges that test her courage and kindness. The prophecy could be related to saving the beauty of the Alps from some kind of threat.
One idea could be a story where Demetri and Heidi are sent on a secret mission by the Volturi. They have to infiltrate a group of rogue vampires who are causing chaos in a small town. Along the way, they start to question their loyalty to the Volturi as they see the good in the town's people.
Well, in 'Heidi Original Story', Heidi goes to live with her grandfather who is a bit of a recluse in the mountains. She brings warmth and love into his life. She also spends time with the goats and enjoys the simple pleasures of the Alpine meadows. When she meets Clara, she tries to help her get better, and through their friendship, Clara also discovers the joys of nature. It's a story full of kindness, friendship, and the beauty of nature.
One idea could be exploring the unspoken stories of the ranch hands. Maybe there's a hidden love affair between two of them that has to be kept secret due to the social norms of 1923. Another could be focusing on how a young character dreams of leaving the ranch and going to the big city, but faces many obstacles. And a third idea could be a mystery plot where strange things start happening on the ranch and the characters have to figure out what's going on.
One idea could be a what - if scenario where Naruto becomes a rogue ninja. This would completely change the dynamics of the story and his relationships. For example, he might be hunted by his former friends, and we could explore his inner struggle and reasons for turning rogue.
A really interesting fanfiction plot could be about a group of scientists who were working on a project to reverse - engineer the demon technology. They think they can use it to create a weapon against the demons. However, things go wrong and they accidentally open a new portal to a different demon dimension, which brings in even more powerful and unknown demons. The story could then focus on how they deal with this new threat and try to close the portal.
Perhaps a plot where the magic that exists in the Clannad world is more fully understood and harnessed by the characters. This could lead to new ways of solving the problems they face, such as Nagisa's health issues. Also, a story about the characters in a post - Clannad world, how they are building their new lives and families.
One idea could be a story about an ordinary villager in Maple World who discovers a hidden power within themselves. Maybe they find an ancient artifact that gives them the ability to communicate with monsters and they use this power to broker peace between the villagers and the monster tribes.
One idea could be that Cinderella is a secret superhero. By day she endures the cruelty of her stepfamily, but by night she uses her superpowers to help the poor in the kingdom. Another could be that the prince is actually under a curse too, and only Cinderella's true love can break both their curses. Or perhaps Cinderella is an inventor in disguise, creating amazing gadgets that she uses to outwit her stepfamily.
One idea could be a story where a young trainer discovers a rare and powerful Pokemon that has the ability to communicate telepathically. This Pokemon could lead the trainer on a quest to find a hidden place full of ancient Pokemon knowledge.
In a modern - day cinderella story fanfiction, Cinderella could be a struggling artist. The prince is a wealthy art collector. They meet at an art exhibition instead of a ball. Cinderella's art catches the prince's eye, and he is determined to find the artist behind it, leading to their love story.