Fanfiction about a villain saving Batman: What are some interesting plot ideas?

One idea could be that Nightwing is captured by a powerful new villain in Gotham. Batman has to use all his detective skills to find Nightwing's location. Then, in a intense showdown, he battles the villain's minions and finally rescues Nightwing. Maybe Nightwing was being held in an abandoned warehouse on the outskirts of the city.

Well, perhaps Arrow is poisoned by a rare toxin that only Batman has the resources to find an antidote for. Batman races against time, using his network in the criminal underworld to track down the ingredients for the antidote. Meanwhile, he also has to fend off the villain's minions who are trying to stop him from saving Arrow. In the end, he manages to save Arrow just in the nick of time.

One plot idea could be that Superman is exposed to a new type of kryptonite that not only weakens him physically but also starts to affect his mind, making him a danger to himself and others. Batman, using his detective skills, discovers the source of this new kryptonite and figures out a way to neutralize it, thus saving Superman. Another could be that Superman is framed for a crime he didn't commit and is being hunted by the world. Batman, believing in his friend's innocence, uses his resources and stealth to clear Superman's name and save him from the wrath of the world.

One plot idea could be that the Joker is in a situation where he's being hunted by a more dangerous criminal group, and Batman, despite their long - standing enmity, saves him because he realizes the chaos that would ensue if the Joker fell into the wrong hands. Another could be that the Joker has some information vital to Gotham's safety, and Batman has to rescue him from a hostage situation to get that information. Maybe the Joker is poisoned, and Batman has to find an antidote and save him in order to also stop the spread of the poison throughout Gotham.

One idea could be that Batman discovers a hidden weakness in an enemy that's about to destroy the Justice League. He uses his detective skills to find a way to counter it and saves them at the last minute. For example, if the enemy has a device that can nullify the League's powers, Batman figures out how to disable the device.

One plot idea could be that Harley Quinn is being hunted by a new super - villain in Gotham who wants to use her knowledge of the Joker's operations against him. Batman, despite their past differences, decides to save Harley because he realizes she could be a key in preventing a much larger threat to the city. He manages to rescue her from a dangerous trap set by the new villain and in the process, Harley starts to see Batman in a new light, not just as an enemy but as someone who actually cares about her well - being.

One idea could be that the villain somehow gets amnesia and Batman has to decide whether to use this to his advantage or try to rehabilitate the villain. Another could be a scenario where the villain and Batman are forced to team up against a greater threat that endangers Gotham. Maybe a new, extremely powerful villain emerges and Batman realizes he needs the knowledge and skills of his regular foes to stop it.

Perhaps the main character discovers that the self - saving system has a hidden agenda. He then has to outwit the system itself while still trying to save himself from his 'scum villain' fate. He could start by gathering evidence about the system's true nature and finding allies who believe him.

Another interesting angle is to explore an alternate universe where Batman has been turned evil and the villains form a harem around him as a sign of loyalty. They could then go on to cause chaos in Gotham in a more organized and united front. Poison Ivy might use her plant powers to create a lair for this new 'evil' Batman and his harem, with each villain having their own area based on their skills and desires.

One plot idea could be that Hinata is captured by a powerful enemy during a mission. Naruto, using his newfound Sage Mode abilities, tracks her down. He battles through hordes of minions, and when he finally reaches Hinata, he has an epic showdown with the main villain to save her. Another could be in a post - war scenario where Hinata is in danger from a hidden threat within the village, and Naruto, with his status as a hero, uncovers the plot and saves her just in time.