A really interesting plot for batman family fanfiction could be centered around a family - wide secret that gets exposed. Maybe Batman has been hiding a connection to an old enemy that could put the entire family in danger. The family members then have to deal with the fallout, both in terms of their public image and their relationships with each other. This would involve a lot of drama, action, and exploration of their complex family dynamics.
One idea could be exploring the relationship between Batman and Robin in a more emotional depth. Maybe Robin is going through a tough time at school and Batman has to balance being a mentor and a crime - fighter. Another could be a time - travel plot where the Bat - family gets sent to different eras in Gotham's history and has to adapt and still fight crime.
Well, you could have a story where the Bat - family faces a crisis that makes them question their purpose. Robin might start to doubt if he should continue in this life. The family then has to work together to reaffirm their values. It could also be interesting to see a story where an old enemy returns, but this time targets the emotional weaknesses within the Bat - family.
One idea could be that Batman and Catwoman have a daughter who discovers her parents' secret identities. She could struggle with the duality of their world and try to find her own place in it. Maybe she has her own unique set of skills that combine elements of both Batman and Catwoman.
One idea could be that Batman and Wonder Woman have a child who inherits their combined skills. The child might struggle with the high expectations and the different worlds of Gotham and Themyscira. Another plot could be about them forming a family unit to protect the world in a new way, using both Batman's detective skills and Wonder Woman's warrior abilities.
One idea could be exploring the relationship between Batman and Robin in a different light. Maybe Robin has to take on Batman's role temporarily when Batman is injured. Another idea is a story about Batgirl's early days of training and how she overcame difficulties.
One idea could be exploring what if Bruce Wayne's identity as Batman was exposed accidentally by a new high - tech surveillance system in Gotham. Another could be a story where Batman has to take on a new identity temporarily to infiltrate a secret criminal organization that has been studying his every move as Batman.
Perhaps they could start off as rivals in the fanfiction. Batman from the present is skeptical of Batman Beyond's more high - tech approach. But as the story progresses, they learn from each other and become a great team. For example, Batman could teach Batman Beyond some of his old - school detective skills, while Batman Beyond shows Batman new ways to use technology in combat and surveillance.
A plot could involve a time - travel scenario where Batman and Supergirl are sent back in time to prevent a major event that would change the future of both their worlds. They would have to work together, using their different skills and knowledge of their respective eras.
One idea could be that Batman and Robocop team up to take on a powerful criminal organization that is using high - tech weaponry. They would combine Batman's stealth and detective skills with Robocop's firepower and law enforcement programming.
One idea could be Batman using his detective skills to uncover a hidden threat that the Avengers initially overlook. For example, he might notice some small, seemingly insignificant details during a battle scene that lead him to a much larger conspiracy.
One idea could be exploring the psychological state of Batman during Knightfall more in - depth. Maybe focus on his nightmares and how they affect his decisions in the story. Another could be a what - if scenario where a different character takes on the role of protecting Gotham during Knightfall, like Oracle guiding a team of young vigilantes.