Perhaps the twist is that Sirius saves Draco, but in doing so, he sacrifices his own freedom. And then Draco has to figure out a way to return the favor and free Sirius. Or it could be that the reason Sirius saves Draco is not what it seems at first. Instead of pure altruism, he has a hidden motive related to his own past or a prophecy that involves Draco.
One plot twist could be that Sirius saves Draco from a certain death, but then Draco loses his memory. This forces Sirius to help Draco regain his memories while also protecting him from those who might want to take advantage of his vulnerable state. It adds an extra layer of complexity to their relationship and the overall story.
One possible plot twist could be that the real danger was not what it seemed at first. For example, while the Avengers thought they were being attacked by a supervillain, it was actually a test set up by a greater power. And Peter discovers this truth while trying to save them. Another twist could be that Peter has to sacrifice one of his powers temporarily to save the Avengers, which changes his approach to being a superhero.
Perhaps Draco saves Hermione in a very public and unexpected way. This could lead to a huge scandal in the wizarding world. Lucius might be shamed and lose a lot of his influence among the Death Eaters. Draco, on the other hand, might find himself an outcast among his own family and former friends. Hermione, feeling indebted to Draco, might try to protect him from the backlash, which could further develop their relationship in an interesting way. It could also be that Draco's act of saving Hermione is part of a prophecy that neither of them knew about. This could add a layer of mystery and destiny to their story.
In this type of fanfiction, a plot twist could be that Snape saves them, but they end up having to go into hiding in a completely unexpected place. Maybe they have to live among muggles in a way they never thought possible. Another plot twist could be that Snape saves them, but then realizes that he has put himself in a very dangerous position with Voldemort's followers. So he has to find a way to protect himself while also protecting Lily and James. And there could also be a plot twist where Snape saves them, but they don't believe his motives are pure and they try to escape from him, leading to a whole new set of adventures and challenges.
One possible plot twist could be that Kraglin saves Tony, but it turns out Tony was set up as bait by a powerful enemy. So, instead of being out of danger, they are now both in the crosshairs of an even greater threat.
One possible plot twist could be that Paul has an ulterior motive for saving Ash. Maybe he wants to use Ash for his own gain later on.
The plot could twist when it turns out that the real danger the Avengers are in was set up by someone close to Peter. It could be a friend or a teacher who has been secretly working for a super - villain. Peter has to overcome the shock of this discovery and still find a way to save the Avengers.
One possible plot twist could be that Naruto's closest friend turns out to be secretly working for the enemy. Just when Naruto is about to make a final stand against the invaders, his friend betrays him, leaving him in a difficult situation. But Naruto, being Naruto, manages to find a way to turn the situation around and still save the village.
A possible plot twist could be that Bardock actually saves Broly, but in doing so, he unknowingly sets in motion a chain of events that leads to an even greater threat. For example, by saving Broly, he might disrupt the balance of power among the Saiyans in a way that angers some powerful factions, who then form an alliance with an external enemy.
Well, a plot twist might be that Draco, who is supposed to be Voldemort's pet, actually starts to have a strange influence on Voldemort. Maybe Draco's ideas or his unique perspective begin to make Voldemort question some of his own actions or beliefs. Or perhaps there is a revelation that Draco was put in this 'pet' position by someone else as part of a bigger plan, and Voldemort was unknowingly a part of it.
Maybe Victoria has actually set a trap for Jasper while pretending to target Bella. So when Jasper goes to save Bella, he walks right into the trap. Or perhaps there's a misunderstanding and Bella thinks Jasper is working with Victoria at first, which adds a whole new layer of complexity to the story.