One interesting plot could be a team - up between Power Girl and Superman against a powerful new villain from another dimension. They have to combine their super - strength and other abilities to stop this threat that is causing chaos across multiple universes.
A plot might involve Power Girl and Superman having a friendly competition to see who can save more lives in a week. This would show their different approaches to heroism. Superman might focus on large - scale disasters, while Power Girl could be more hands - on with street - level crime. And in the end, they realize that they are both equally important in protecting the world.
Maybe a plot where Superman and Power Girl have to deal with a misunderstanding in the public's perception of them. This leads to them having to work together to clear their names and also protect the city at the same time. They start to understand each other better during this process.
A plot could involve Power Girl coming from an alternate universe and Superman having to help her adjust to his world while they also discover a connection between their two universes that could be dangerous if not fixed. This would explore their relationship as cousins and how they deal with the differences in their upbringings.
Some fanfictions focus on the relationship between Superman and Power Girl outside of their superhero duties. For example, they could be attending a family gathering where they have to deal with all the normal family drama, but with the added complication of being super - powered. There are also stories where they train together, sharing their different combat techniques and learning from each other. This not only helps them become better heroes but also deepens their bond as family members in the DC lore.
One interesting plot could be Superman traveling back in time to prevent the destruction of Krypton. He could use his powers to stop the cataclysmic events that led to its downfall. Maybe he tries to convince the Kryptonian council of the impending danger, but faces resistance as they don't believe him at first.
One interesting plot could be that they team up to fight a new and extremely powerful villain from another dimension. This villain has powers that neither Superman nor Supergirl has faced before, forcing them to combine their unique abilities in creative ways.
One interesting plot could be Batman and Superman having to team up against a common enemy that is more powerful than either of them alone. This forces them to put aside their differences and combine their skills.
One interesting plot could be Superman swapping bodies with a normal human. The human then has to deal with Superman's powers while Superman experiences what it's like to be an ordinary person. He might struggle with things like paying bills or getting to work on time in the human's body.
In some 'evil superman x reader fanfiction', there could be a plot where the reader is the only one who can see the good that still exists deep within the evil Superman. The reader tries to bring out that good, leading to a series of intense and emotional interactions between them. It's like a battle between the evil side of Superman and the potential for redemption that the reader believes in.
One possible plot could be the challenges they face in their daily lives while keeping Superman's identity a secret even within their marriage. For example, Lois might have to deal with the media constantly speculating about Superman's personal life and she has to be careful not to let any hints slip.
In a Harley Quinn x Superman fanfiction, there could be a plot where Harley Quinn is hired by someone to assassinate Superman. But as she gets to know him during her attempts, she realizes he's not what she thought. So instead, she decides to protect him. This change of heart could create a lot of drama and action as they face off against the forces that hired her in the first place. Also, it could explore how their different personalities - Harley's wildness and Superman's moral righteousness - interact and complement each other.