It could also be that a group of magical creatures are behind the kidnapping. They might have heard about Draco's family's wealth and think they can get a big ransom from them. In this case, Draco would have to use his wits and what he's learned at Hogwarts to try and escape. He might try to communicate with the creatures, using his knowledge of different languages, or he could try to find a weakness in their lair to break free.
Well, perhaps the kidnappers are Death Eaters who have a different plan for Draco. They could be trying to use him as a bargaining chip against his father, Lucius Malfoy. This would put Draco in a really tough situation, caught between his loyalty to his family and his own desire to break free from the dark side that his family is associated with.
It could be some of the more radical pure - blood supremacists. They might see Draco as a symbol of the old pure - blood families that are starting to lose their influence. By kidnapping him, they hope to send a message to the Malfoy family and other pure - bloods that they need to be more aggressive in maintaining their status.
Another scenario could be that the kidnappers have some sort of ulterior motive related to Sora's special powers. They might try to extract that power from him, but Sora, being the strong - willed character he is, would fight back in some way, even while being held captive.
Perhaps she'll use her own abilities to escape. Sarada is a strong and intelligent ninja. She could outwit the kidnappers, find a weakness in their security, and make a run for it. For example, she could use her Sharingan to deceive them or find a hidden passage if she's locked in a room.
Well, Sonic might be held in a high - tech prison. His friends like Tails would start a rescue mission. They could use their unique skills, Tails with his flying and mechanical abilities, to track Sonic down.
It could be that the kidnappers have a personal vendetta against Asta. They might be from a family or group that was shamed by Asta's actions in the past. In this situation, they might not be interested in his anti - magic directly. Instead, they just want to get revenge on him. Asta, being the positive person he is, would probably try to talk some sense into them. But if that doesn't work, he'll have to rely on his physical strength and whatever anti - magic powers he can muster up to defend himself until help arrives.
Well, he might start to show off his wand skills immediately. Maybe he'd use it to perform some spells he's been eager to try, like a new levitation charm or a tricky transfiguration spell just for the fun of it.
If Lloyd is kidnapped, it could be a plot by the villains to gain some sort of advantage. Maybe they want to use Lloyd as a bargaining chip to get the other ninja to give up their elemental powers. The ninja would then have to decide whether to risk everything to save Lloyd or come up with a more clever plan to outwit the kidnappers.
Well, he could be used as a bargaining chip. Team Flare might try to exchange Ash for some powerful Pokémon or valuable items. They could also try to force Ash to reveal any secrets he has about powerful Pokémon or rare items he's come across during his travels.
Perhaps Kaname would discover her disappearance and go on a quest to find her. Given his deep connection to Yuki, he would stop at nothing to get her back. He could use his pureblood vampire powers to intimidate those who kidnapped her into revealing her location.
In this kind of fanfiction, the other characters from the Winx Club world could also get involved. Sky, for example, would be extremely worried about Bloom. He would probably team up with the Winx girls to rescue her. He could use his flying skills and combat training to help in the search and rescue mission. And there could be a big showdown between the good guys and the kidnappers at the end.