In a Peter Parker x Elsa married fanfiction, the plot could start with their accidental meeting. Maybe Peter is on a mission in a place near Arendelle and stumbles upon Elsa. They are initially wary of each other but soon realize they share a kindred spirit. As they fall in love and get married, they face many challenges. Elsa may struggle with the idea of Peter constantly putting himself in danger as Spider - Man, and Peter may find it difficult to understand the political and magical aspects of Elsa's world. But through it all, their love for each other helps them overcome these difficulties.
A plot could revolve around them hiding their relationship from the public at first. As they get married secretly, they have to deal with the difficulties of maintaining a double life. Peter's friends in the Marvel universe and Batgirl's allies in the DC world might start to suspect something, and they have to keep their secret while also saving the world together.
Well, it could be about them balancing their superhero lives and married life. Maybe they team up to fight a new villain that threatens their city while also dealing with the everyday challenges of being married, like who does the dishes or takes out the trash.
One possible plot could be them facing a super - villain together as a married couple. They combine their powers and skills, Peter's spider - like abilities and Rocketeer's flight and weaponry skills, to defeat the bad guy.
Perhaps they decide to start a family. Then the story could focus on how Peter tries to protect his family from his enemies while still being a loving husband. There could be a lot of drama as they face threats from villains who find out about his family.
One possible plot could be that they have to hide their marriage from the public because of Shriek's past and Peter's secret identity. They face challenges in keeping their relationship a secret while also dealing with super - villain threats.
Well, perhaps the plot could involve an enemy who discovers their marriage and tries to use it against them. This could lead to a lot of drama and action. They would have to work together to protect their relationship and also save the day. Another aspect could be their cultural differences, Peter coming from a more scientific - based superhero world and Zatanna from a magical one, and how they navigate those differences within their marriage.
Perhaps they get married in a secret ceremony because Peter is worried about his enemies using Jean as a target. Then, they have to deal with the secrecy and how it affects their relationship. They might also work together to fight crime in some way, with Jean using her own skills (which could be something like being a brilliant scientist or having some self - defense skills) to support Peter in his superhero duties.
One possible plot could be that they are forced into a marriage due to some sort of inter - galactic treaty. Peter has to adapt to Proxima Midnight's alien culture and she has to understand his human values. There would be a lot of cultural clashes and misunderstandings at first, but they gradually grow to care for each other.
Well, one possible plot could be that they have to protect their family. Since both are from different but dangerous worlds, their combined family might be a target. So they have to use their skills, Peter's spidey - sense and Elektra's martial arts, to keep their loved ones safe.
One possible plot could be that they meet in a rather unusual situation. Maybe Peter is on a mission in Gotham and crosses paths with Selina. They initially clash due to their different methods but gradually develop a mutual respect and then fall in love. Their marriage could be a secret at first, causing all sorts of complications as they try to balance their superhero/villain (in Selina's case, sometimes anti - hero) lives with their new relationship.