In this fanfic, Starlight's revenge might be driven by jealousy. She sees other ponies getting more attention or praise than her. So she decides to get even. She could start by spreading false rumors about the popular ponies. Then, as her revenge escalates, she might use her magic to make their most precious possessions disappear. However, in the end, she might realize the error of her ways through the friendship of a few true friends who help her see that revenge is not the answer.
Well, it could be about Starlight feeling wronged by the ponies in Ponyville. Maybe she decides to take revenge because she was excluded from some important events. So she starts using her magic to create small troubles for the ponies, like making their crops grow slowly or causing minor chaos during their festivals.
Obviously, Starlight Glimmer would be the main character as it's her revenge. But Twilight Sparkle could also be a major character. Since Twilight is often the mediator in Ponyville, she would be the one trying to stop Starlight's revenge and make her see reason.
Perhaps the story in the 'drunk mlp fanfic' is centered around a group of ponies who accidentally consume some enchanted cider that makes them drunk. They then start seeing strange visions and go on a wacky journey to find a cure, all while their normal pony friends are trying to figure out what's wrong with them.
The plot might center around a portal that opens between the two worlds. The Hyrule Warriors characters, such as Link or Zelda, are transported to Equestria. There, they discover that the chaos in their own world is somehow related to a disturbance in the harmony of Equestria. So, they join forces with the ponies, like Twilight Sparkle and her friends. Along the way, they face challenges that require both the brute strength and combat expertise of the Hyrule Warriors and the magical abilities and friendship power of the ponies.
Perhaps in the fanfic, Luna has a nightmare about her past as Nightmare Moon. She wakes up crying because she fears that she could lose control again and turn back into that evil form. This would show her internal struggle with her own identity and the fear of repeating her past mistakes.
One possible plot could be that a pony has a really bad toothache and has to visit the dentist pony in Ponyville. The dentist pony discovers that there's a magical element causing the toothache and has to find a way to fix it without harming the patient. It could involve a journey to find a special herb or spell.
One possible plot could be that the ponies accidentally end up in the Attack on Titan world through some sort of magical portal. They then have to figure out how to survive in this harsh environment. They could use their unique pony abilities, like Fluttershy's connection with animals, to try and understand the Titans better. Maybe they could even find a way to communicate with the Titans and find out if there's a way to stop the attacks without all the bloodshed.
A possible plot could be that a human soldier gets lost in the mlp world. He has to adapt to the new environment which is very different from his own. He could use his combat skills to protect the ponies from a common enemy, like a dragon. As he stays longer, he starts to understand the pony culture and values, and in turn, the ponies learn about human courage and tenacity.
In a fanfic, Chrysalis could be pregnant after falling in love with an unexpected character. This could be a pony from Canterlot who saw past her villainous exterior. As she becomes pregnant, she has to navigate the complex world of pony society and the expectations of her own Changeling kind. She might face discrimination from both sides, but also find some unexpected allies who support her during this difficult time of pregnancy.
Well, the plot could involve Celestia and Discord having to team up to save Equestria from a new, unknown threat. Maybe a powerful dark magic that neither of them can handle alone.
If 'the bridge godzilla mlp fanfic' exists, the plot might center around a magical bridge that connects Godzilla's world to the MLP universe. Maybe some ponies accidentally cross this bridge and find themselves in Godzilla's territory. Godzilla then follows them back to Equestria, and the ponies have to use their magic and friendship to deal with this huge, unexpected threat. There could also be sub - plots about the ponies trying to understand Godzilla's nature and if there's a way to communicate with it.