You could also write a fan fiction about the Black Company encountering a completely new and powerful enemy. Maybe a magical being from a far - off land that forces them to adapt their tactics and learn new skills in order to survive.
A cool plot for The Black Company fanfiction could be a story about a new recruit who has some special power that no one in the company has ever seen before. This power could either be a great asset or a source of suspicion among the other members. Or you could write a plot where the company has to face an enemy that is not from their usual foes, like a supernatural force that they don't understand at first. It could also be interesting to write a story about the relationships within the company, like a love story between two members that has to be kept a secret because of the company's rules.
One idea could be exploring the backstories of the characters in more depth. For example, delving into the past of the player - controlled character, their training, and what led them to be part of the Black Ops 3 unit. Another plot could involve a mission that goes horribly wrong and the team has to fight against their own side that has been corrupted by some new enemy technology. Or perhaps a story about a character who discovers a hidden conspiracy within the military that the Black Ops 3 operations are actually covering up.
One idea could be that the Ghostbusters discover a new type of ghost that can possess technology. So they have to find a way to stop it from taking over all the electronics in the city. It would be a race against time as the city starts to descend into chaos with machines going haywire.
One idea could be a story where a minor character from the game gets a chance to become a hero. For example, a low - level soldier who discovers a hidden power within himself and uses it to save his comrades during a crucial battle.
One interesting plot idea could be exploring what would happen if Aladdin's three wishes had unforeseen consequences that affected not just him but the whole city. For example, a wish for wealth might lead to an economic imbalance.
One idea could be Yzma getting a chance to redeem herself. Maybe she accidentally discovers a new magic that can reverse all the bad things she's done in the past and she has to decide whether to use it for good or for her own gain.
One idea could be exploring what would happen if the Pearson family went on a trip around the world together. They could face various cultural clashes and personal growth moments during the journey.
One idea could be that a group of teenagers discovers an abandoned UFO in the woods. They start to explore it and accidentally activate some kind of alien technology that gives them superpowers. Another could be a world where UFOS are common and there is a special agency that deals with the relations between humans and aliens. A third idea is that an alien from a crashed UFO befriends a lonely human and they go on adventures together.
Well, a really interesting plot could be about a hidden family connection among the rookies. Maybe one of them discovers they are related to a high - ranking officer in a very unexpected way. It could add a whole new layer of drama and family - related storylines to the fan fiction. And also, a plot where the rookies get involved in an international case that takes them out of their normal jurisdiction would be cool.
A really interesting plot for Castlevania fan fiction would be to set it in a modern - day world where the legacy of Castlevania still exists. There could be a young hacker who stumbles upon ancient texts about the vampire hunters and Dracula. As he delves deeper, he discovers that there are still vampires and dark forces lurking in the shadows of the modern world. He then teams up with a descendant of the Belmont family to fight this new threat, which would be a great blend of old and new, and bring a unique twist to the traditional Castlevania story.