A great plot for little merman fanfiction could be that he has a unique ability to communicate with all sea animals, including the most dangerous ones. His ability is needed when a large sea monster starts attacking ships and the underwater kingdoms. He has to use his power to understand the monster's motives and find a way to stop it, all while dealing with the politics and rivalries within his own merman society.
One idea could be that the little merman discovers a hidden underwater kingdom full of magic and mystery. He could be on a quest to find a powerful artifact that can save his own kingdom from a dark force. Another plot could be a love story where he falls in love with a human who can also breathe underwater due to a special spell.
Perhaps the little merman gets lost in a storm and washes up on a strange shore. There, he meets a group of friendly sea creatures that are different from those in his home. They help him on his journey back home, and along the way, he learns about different cultures and ways of life in the ocean. He could also face some villains who are trying to stop him from getting back.
One idea could be to explore what would happen if the Little Mermaid had a different power, like the ability to control storms. Another could be a story where she meets a merman from a different part of the ocean who has a completely different culture. Maybe a fanfiction where she has to save the entire ocean from a new kind of threat that no one has ever seen before.
Maybe Harry is the only merman in a world where mermaids are common. He faces discrimination at first but then uses his unique abilities to save the underwater kingdom from a great danger. For example, he might have a special power to purify poisoned waters that the mermaids don't have.
Well, a cool plot might be that there's a merman who has a special power to control water currents, and Percy needs his help to find a lost magical artifact deep in the ocean. In return, Percy has to help the merman get accepted by the surface - dwelling gods. Or perhaps a merman is wrongly accused of stealing Poseidon's trident and Percy has to prove his innocence.
A plot could be that Eric, as a merman, is part of a group of mermen who are at war with a different underwater species. Ariel gets caught in the middle of this conflict. Eric has to choose between his loyalty to his kind and his growing feelings for Ariel. This would create a lot of drama and tension in the fanfiction.
The main plot of the little merman story is about a mermaid who falls in love with a human prince. She makes a deal with a sea witch to get legs in order to be with the prince.
One idea could be Stuart going on a cross - country adventure to find his long - lost relatives. Another could be Stuart joining a secret society of small, intelligent creatures in the city. Or perhaps Stuart has to solve a mystery in his neighborhood.
One idea could be a little one in a magical world where they discover they have special powers. For example, they can communicate with animals and go on adventures with their new furry friends to save the enchanted forest from an evil sorcerer.
One idea could be exploring the vampire's family history more in - depth. Maybe there are ancient secrets or rivalries within the vampire clan that the main characters could uncover.
The little bat could discover a hidden cave filled with ancient bat artifacts. It then has to protect this cave from other animals who might want to take over or destroy it. This could involve making alliances with other bats and using its wits to outsmart the invaders.
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.