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.
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.
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.
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.
Often, the theme of family is central. Dean's reaction to Sam's psychic boost can vary from being supportive to being worried about how it will change their dynamic. Also, there's the theme of the unknown. The source of Sam's psychic boost might be a mystery, and exploring that mystery is part of the story. There can also be a theme of sacrifice, like Sam having to sacrifice normalcy to use this power for good.
Well, I'm not sure if it's still up, but there was a fanfic called 'Sam's Psychic Surge'. It was a bit of a darker take on Sam getting a psychic boost. The power came with a price, and Sam had to make some tough choices. It was really well - written in terms of exploring the moral implications of having such a powerful ability.
Often, his friends like Sasuke, Sakura, and Kakashi might come to his aid. Sakura, being a medical ninja, would likely be the first to start treating his injuries. Sasuke could use his Sharingan to help in some way, perhaps to find the root of the injury or fend off any threats while Naruto is injured. Kakashi, with his experience, would also offer strategic advice on how to deal with the situation.
One possible plot development could be that his friends and family rally around him. They might search desperately for the person who shot him. For example, if it was a case of mistaken identity, they could start to dig into Sam's recent activities to find any leads. Maybe they discover that Sam was unknowingly involved in something dangerous, like being in the wrong place at the wrong time during a criminal deal. This could lead to a whole new sub - plot where they try to figure out who the real target was.
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.
In some fanfictions, Naruto's recovery could be a long and arduous journey. He might have to go through intense physical and mental training while recovering. The author could also introduce some kind of ancient and forgotten medical knowledge that is used to treat his severe injuries. His recovery might also be tied to some prophecy or hidden power within him that is awakened due to the near - death experience.