A great plot could be that The Handler gets amnesia. Losing her memory, she has to rely on the kindness of the Umbrella Academy members she once opposed. This forces her to see them in a new light and also makes her question her own actions. It could lead to a journey of self - discovery for her within the world of the fanfiction.
One idea could be exploring what would happen if a new member joined the Umbrella Academy. Maybe a time - traveling superhero from the future who has knowledge of a great threat coming. Another could be a story where the members lose their powers and have to rely on their wits and teamwork in a completely different way. For example, dealing with a powerful enemy who can nullify powers.
Perhaps the fanfiction could be about a baby that is the result of a time - travel accident within the Umbrella Academy world. The baby has a mix of powers from different eras and the academy members have to figure out how to deal with this unique situation. They might have to teach the baby how to control its powers while also protecting it from those who fear its abilities.
A possible plot idea is that Klaus discovers that his ghost - seeing ability is not just a random power, but part of a much larger, supernatural plan. The ghosts he sees are actually messengers from a different dimension, and they are trying to guide him to save both his world and theirs. Also, the fanfiction could explore a plot where Klaus' relationship with a particular ghost deepens into a strange friendship. This ghost has the ability to enter the dreams of the other Umbrella Academy members, and Klaus has to use this to his advantage to solve a mystery within the academy. Or, there could be a story where the ghosts start to disappear one by one, and Klaus has to race against time to find out what is causing it and stop it before he loses his connection to the spirit world completely.
Another plot could involve Five getting sick due to some side - effect of his powers overusing them in a short period. As he gets sicker, he starts to lose his memories of different timelines he has visited. The story could then focus on his journey to regain those memories with the help of his siblings.
One idea could be creating an OC who has the power to manipulate time in a different way than Five. For example, they can freeze time for specific objects or people while the rest of the world continues as normal. This would add a new dynamic to the Umbrella Academy's adventures and interactions with the timeline.
Another great crossover could be with 'The Boys'. In this scenario, the Umbrella Academy would be thrown into the world of corrupt superheroes. They would have to navigate the complex politics and power plays while also trying to stay true to their own values and not get caught up in the dark side of superhero - ism.
One idea could be exploring what would happen if the siblings had different powers. For example, if Luther could control time instead of having super strength. It would change the dynamics of their relationships and how they handle missions.
For Umbrella Academy fan fiction, you could write about a scenario where a new sibling is discovered. This new character could have a power that either complements or clashes with the existing siblings' powers. They would have to integrate into the group and deal with the family dynamics. Another plot could be that the Umbrella Academy is transported to a different era, like the 1920s, and they have to adapt to the new time period while also trying to find a way back to their own time. And a third idea is a story where they have to face a threat that is specifically targeting their weaknesses as a group, forcing them to confront and overcome their personal issues.
The Handler's relationships are key. If in the fanfiction she forms an unexpected bond with one of the Umbrella Academy members, it can be a turning point for her character. Maybe she starts to see the value in the Academy's unorthodox ways and questions the Commission's strict regime. This new relationship could force her to re - evaluate her loyalties and goals, creating a believable and engaging character arc.
One possible plot could be that the Umbrella Academy members are somehow transported to the Naruto universe. They might initially be seen as strange intruders. Five, with his time - traveling abilities, could be intrigued by the ninja time - travel jutsus. Klaus might make friends with some of the more spiritual ninja due to his ability to see the dead. And they could all team up with Naruto and his friends to fight a common enemy, like a new and powerful Akatsuki - like organization that threatens both their worlds.