Another plot idea could be a time - travel aspect. A character could be sent back in time to a crucial moment in the history of the underworld blood wars. They could then try to change the past in order to alter the present situation. This would involve interacting with past versions of characters and dealing with the consequences of changing events.
One idea could be to explore the backstories of some of the minor characters in more depth. For example, a side character who has always been in the shadows could have a secret past that ties into the main conflict in a unique way.
A plot could involve a new, powerful vampire or lycan emerging. This new character could disrupt the existing power balance between the two factions, leading to new alliances and betrayals. They might have a different view on the war, perhaps wanting to end it through means that are not understood or accepted by the main characters at first.
One idea could be a crossover where characters from the Underworld and Divergent universes have to team up. For example, Selene from Underworld and Tris from Divergent might find themselves in a situation where they need to combine their skills to fight a common enemy. Maybe a new vampire - faction hybrid is created that threatens both of their worlds, and they have to figure out how to stop it.
One idea could be to explore the backstory of a minor character from the movie. For example, a young vampire who was turned during the wars but has unique powers. Another could be a love story between a vampire and a lycan that defies the age - old feud in the Underworld Blood Wars universe. Maybe they team up to stop a greater evil that neither side was aware of.
The main plot involves intense vampire - lycan wars. There are power struggles among different vampire clans. Selene, the main character, is caught in the middle of these battles as she tries to protect her kind and uncover secrets that could change the balance of power forever.
A great plot for Strike the Blood fanfiction could be a time - travel scenario. Kojou is sent back in time to a period when vampires were first emerging. He has to use his modern - day knowledge and powers to survive in this ancient and dangerous time, while also trying to find a way back to his own time. This would allow for a lot of world - building and exploration of the vampire lore in the series.
One idea could be Percy having to make a deal with a minor underworld god to save Annabeth from a new and strange curse that's slowly draining her life force. He has to complete a series of tasks in the underworld that test his loyalty and courage more than ever before.
Well, a great plot idea could be that Eve discovers she's pregnant at a very inconvenient time, like right before a major conflict. This could create internal struggles for her as she wants to protect her unborn child but also feels a sense of duty to be involved in the upcoming battle. And the father of the child could be a mystery that she has to figure out, which adds an element of mystery and drama to the story.
One plot idea could be a male character who is a werewolf but has been raised among vampires. He meets Selene and they have to team up to fight a common enemy, like a new breed of super - natural creatures that threaten both vampires and werewolves. This would create a lot of tension and also a chance for a slow - burn romance between them.
A great plot for Star Wars The Clone Wars fanfiction could be centered around a new, unknown planet that gets caught in the middle of the war. The planet has its own unique species and culture. The story could follow how the clone troopers and the Jedi interact with this new civilization, whether they try to protect it or use it for their own strategic advantages. Or perhaps a story where a group of clone troopers start to develop their own individual personalities and question their loyalty to the Republic due to some unethical orders they receive. This could lead to a conflict within the clone ranks and force the Jedi to take sides.
One idea could be exploring the origin of a new, mysterious force - user in the Shadow Wars. Maybe it's a forgotten Jedi or Sith technique that resurfaces and causes chaos. Another could be focusing on the relationship between a group of rebels and how they deal with the added threat of the Shadow Wars.
A great plot for Kaiju Wars fanfiction could be centered around a team of international soldiers who are specially trained to fight the Kaiju. They could have different skills and weapons from various countries. The story could follow their adventures as they face off against different types of Kaiju in different locations around the world. There could be internal conflicts within the team as well, such as cultural differences and different fighting styles. And perhaps they encounter a Kaiju that is much more intelligent than the others, which forces them to come up with new strategies.