Well, a lot can happen! He might have to fake being the royalty to avoid getting caught and try to solve the mystery of the kidnapping. There could also be people who don't believe he's the real deal and try to expose him.
Lots of complications! He might face threats to his life, have to learn the royalty's mannerisms quickly, and figure out how to rescue the actual royalty while keeping up the charade.
It could lead to all sorts of adventures and complications. Maybe the man has to deal with political intrigue and power struggles while trying to protect the kidnapped royalty's interests.
This could result in a complex web of political intrigue. The man might struggle to gain the trust of the people and the court, and there could be attempts to rescue the kidnapped king and restore the status quo.
The story might unfold with the man facing challenges in imitating the royalty's mannerisms and dealing with those who are suspicious of the substitution. There could also be external threats related to the kidnapping that he has to handle.
It could lead to all sorts of drama. Maybe he does it out of kindness, or there could be some ulterior motive.
The story could also take a more emotional turn. Keith's kidnapping could be a major blow to the team's morale, especially for Lance who might feel guilty for not being able to protect him. Meanwhile, Keith could be facing his own internal struggles while in captivity, dealing with memories of his past related to the Galra, and trying to stay strong mentally so that he can hold out until his friends come to rescue him.
The term you're looking for is 'setting'. It encompasses both the time and place of a story.
In some fanfictions where Wendy gets kidnapped, her friends might embark on a crazy rescue mission. Stan could be the most determined one, being her boyfriend. They might face various challenges like dealing with the kidnappers' hideouts and traps.
In many fanfictions where Nya gets kidnapped, her fellow ninjas immediately spring into action. They might start by searching all the known hideouts of their enemies. Kai, her brother, would likely be especially enraged and determined to find her. The team would use their unique skills, like Jay's electrical powers to scan for any signs of her or Zane's analytical mind to piece together clues.
Well, in this fanfic, it probably leads to a whole new adventure and challenges for Hermione and those around her.
It could lead to a wild adventure as his companions race to save him. Maybe there's a villain with a specific motive behind the kidnapping.