He might be interrogated. The Order could be trying to get information from him about the Death Eaters' plans or Voldemort's whereabouts. They would likely keep him in a secure location within their headquarters.
There is also a possibility that Draco's capture could be a part of a bigger plot. Maybe the Death Eaters planned for him to be captured so that he could act as a spy from the inside. Or the Order could use Draco as a bargaining chip to exchange for something they need, like information or the release of one of their captured members.
Well, one possibility is that they could bring insider knowledge. Lucius has been involved with the Death Eaters for a long time, so he might know their plans, hideouts, and secrets. Draco, having been on the cusp of becoming a full - fledged Death Eater, could also contribute valuable information. Their joining would likely cause a stir within the Order. Some members might be very suspicious of them, especially those who have lost loved ones to the Death Eaters. However, if they prove their loyalty, they could be a great asset in the fight against Voldemort. For example, Lucius's wealth and influence could be used to gather resources for the Order, and Draco's skills in magic, which he had been training for the Dark side, could be redirected towards the good of the wizarding world.
In this fanfiction scenario, Draco joining the Order might also mean a significant change in his relationship with Hermione. They could start to see each other in a whole new light. Their shared experiences within the Order could bring them closer together. Draco might learn more about the Muggle - born rights that Hermione is so passionate about, and this could further his transformation from a pure - blood supremacist to a more open - minded wizard.
In the fanfiction, after Percy is captured by Artemis, it's possible that he is forced to join her on a quest. Artemis might need his help for something, like dealing with a powerful monster that only Percy has the skills to defeat. She could also be trying to keep him away from other gods or demigods for some reason. Another scenario could be that Artemis mistakes Percy for someone else who has wronged her, and she holds him captive until she figures out the truth.
Another idea is that Draco becomes involved in some sort of underground magical movement. After Azkaban, he may be disillusioned with the established magical order. He could join a group that aims to reform or even overthrow the current power structures in the wizarding world, leading to all sorts of adventures and conflicts.
There could be a situation where Draco has a change of heart later. Maybe he realizes his mistake after some time away and tries to come back into Hermione's life. This could lead to a very emotional and complex reunion, with Hermione having to decide whether to forgive him or not.
In a 'naruto gets captured' fanfiction, he might be tortured for information. His captors could be after the secrets of his Nine - Tails chakra. They may try to use him as a bargaining chip against Konoha.
If Madara captured Sakura in fanfiction, she could try to use her intelligence to outwit him. Sakura is not just a strong fighter but also a very smart character. She might pretend to cooperate with Madara while secretly gathering information about his plans and weaknesses.
Maybe Naruto is captured by a powerful and mysterious foe. This enemy blinds him as a form of torture. Naruto's friends and allies in Konoha soon notice his absence and begin a search. Naruto, while in captivity, tries to figure out the motives of his captors. He also tries to find ways to escape, using his chakra to sense his surroundings despite his blindness.
Well, in this fanfiction, perhaps Steven could be held captive by an old enemy. Maybe he'll have to use his wits to escape, like finding a weakness in the prison's security system.
Well, perhaps Gengar is captured by a powerful trainer. The trainer might use a special Poké Ball to catch it. Then, Gengar could try to escape from the ball by using its ghostly powers.