If Sam gets kidnapped in a Supernatural fanfiction, it could lead to a whole new adventure. For example, the kidnappers could be a new type of supernatural being that the brothers haven't encountered before. This would force Dean to learn more about this new threat in order to rescue Sam. Sam, on the other hand, could be learning about the motives of his kidnappers while in captivity. Maybe they think Sam has some sort of special power that he's not even aware of, and they want to harness it for their own purposes. This could set up a complex storyline where both brothers are on a journey of discovery while also trying to reunite.
Well, Dean would probably go into full - on search - and - rescue mode. He'd start by reaching out to all their contacts in the hunter community. Maybe he'd call Bobby in spirit form if he could, asking for any leads or advice. He'd also check Sam's last known locations and look for any signs of a struggle.
One idea could be that Sam is kidnapped by a group of rogue hunters who think he's gone too far in his use of demon powers. They lock him in an abandoned bunker and try to 'exorcise' the 'demon' out of him, not realizing he's in control. His brother Dean has to race against time to find him, following a series of cryptic clues left by the kidnappers.
Well, it depends on the type of fanfiction. In darker fanfictions, Sam getting shot could be the start of a downward spiral for the Winchester brothers. Dean could become overly consumed with revenge if it was a hunter or a monster that shot Sam. On the other hand, in more positive fanfictions, Sam getting shot could lead to a moment of self - discovery. He might realize how much he has to live for and how many people rely on him. Maybe it makes him reevaluate his relationships, like his bond with Dean or his friends in the hunting community.
In fanfiction, if Sam was kidnapped, it could lead to a very intense story. Dean would surely go on a rampage to find him. Maybe Sam was kidnapped by a powerful demon who wants to use him for some dark ritual. It could also be a new, unknown enemy who has a vendetta against the Winchesters.
If Sam is kidnapped in Supernatural fanfiction, it could be a personal vendetta. There might be a hunter who has a grudge against the Winchesters and decides to target Sam. This hunter could have a different view on how to deal with the supernatural and thinks the Winchesters are too lenient. So, they kidnap Sam to make a point or to try and force Dean to change his ways. It would create a lot of tension and conflict within the Supernatural community in the fanfiction.
The first thing that might happen is chaos among those who know Ben. His family would be worried sick. If the kidnappers are villains who know about the Omnitrix, they could try to force Ben to unlock all its secrets. But Ben won't give in easily. He'll fight back using whatever means he can, even if he's restrained.
Perhaps Sam gets hurt while trying to protect a civilian. He jumps in front of a werewolf's attack meant for someone else. This would show his selfless nature. The local hunters in the area might not trust Sam and Dean at first, but seeing Sam's sacrifice could change their minds, adding an interesting dynamic to the story.
In many such fanfictions, Yuki's friends would likely launch a desperate search to find him. Kyo might put aside his differences with Yuki in order to rescue him. They would follow any leads, no matter how small. For example, if there was a witness who saw the kidnapper's vehicle, they would track it down. And Tohru would be a source of emotional support for everyone involved, constantly worried about Yuki's safety and trying to keep everyone's spirits up during the search.
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, usually in such a manga, the girl is held against her will, maybe in a secluded place. There could be attempts to rescue her by friends or heroes, and lots of tension and drama along the way.