One possible plot for this fanfiction could be that Bane kidnaps Robin as part of a revenge plot against Batman. Robin is trapped in a dangerous situation, and he has to rely on his training and his mental strength to survive. Bane might taunt Batman with messages about Robin's kidnapping. As Batman races to save Robin, Robin also tries to find a way to free himself and help Batman in the process. The story could explore Robin's growth as a character while facing this difficult situation and the complex relationship between Batman, Robin, and Bane.
It could be Nightwing. He was once Robin himself and has a special connection to the current Robin. Nightwing might hear about the kidnapping and step in to save Robin, using his own unique fighting style and experience.
One possible plot twist could be that Robin has been secretly trained in a new combat technique that he uses to outwit Deathstroke when Deathstroke least expects it. Maybe he pretends to be more injured or helpless than he really is, and then strikes back at a crucial moment.
In this kind of fanfiction, Robin might be in a lot of danger. Slade could be using Robin to get to Batman. He might try to brainwash Robin and turn him against his friends. For example, he could lock Robin in a secret lair and show him false information about Batman to make Robin question his loyalty.
Robin could use his intelligence to analyze Deathstroke's lair and find a weakness in its security system. He might notice a pattern in the guards' patrols or a flaw in the locking mechanisms. Then, he could use his acrobatic skills to create a distraction and slip away unnoticed.
One possible plot twist could be that Red X has a hidden agenda that's not actually malicious towards Robin. Maybe he's trying to protect Robin from a greater threat that the Teen Titans are unaware of. For example, there could be a new super - villain in the city who is targeting the Titans, and Red X believes that by taking Robin, he can keep him safe until the danger passes.
One possibility is that Robin, being kidnapped, will have to rely on his own wits and skills he has learned from Batman. He might try to outsmart the Joker by finding weak points in the place where he is held captive. For example, if it's an old warehouse, he could look for ways to escape through the ventilation system or by using some tools he might find around. And the Joker, being the unpredictable villain, could be constantly taunting Robin, trying to break his spirit before Batman arrives.
It could be the Joker. He's always up to no good and kidnapping Robin would be a great way to mess with Batman. The Joker might want to use Robin to force Batman into a series of cruel and twisted games.
Well, one possible plot development could be that the kidnappers demand a ransom from Batman. Batman then has to race against time to find Robin without alerting the media or causing panic in Gotham. Another development might be that Robin manages to leave some hidden clues for Batman to find while being held captive. Maybe he uses his martial arts skills to briefly overpower one of the kidnappers and mark a symbol on the wall that only Batman would understand.
Well, one possibility is that the other members of Young Justice immediately start a search and rescue mission. They might use their unique skills and powers to track Robin down. For example, Superboy could use his super strength to break through any barriers in their way, while Miss Martian could use her telepathy to try and sense Robin's location. Another scenario could be that Robin manages to escape on his own using his wits and combat skills. He's been trained well by Batman, so he might be able to outsmart his captors.
Well, Batman could start a massive search for Robin. He'd use all his detective skills and his gadgets to track down Poison Ivy. Maybe he'd enlist the help of other heroes too, like Nightwing. And when he finally finds where Robin is being held, there'd be an epic battle between Batman and Poison Ivy.