One interesting plot could be Draco being sent to Beauxbatons as part of an exchange program. There, he has to deal with a completely different magical culture and school system. He might struggle to fit in at first, but gradually discovers new aspects of magic and himself. Another plot could involve Draco falling in love with a Beauxbatons student, which causes a stir as their families may have different allegiances in the wizarding world. And a third plot could be Draco getting involved in a mystery that is centered around Beauxbatons, perhaps something to do with an ancient magical artifact hidden in the school.
Some plots could be like this. Draco is invited to Beauxbatons for a special magical event. There, he meets a Beauxbatons witch who challenges his beliefs. They start off as rivals but slowly become friends. Another idea is that Draco discovers a hidden passage between Hogwarts and Beauxbatons that has been long forgotten. He uses this passage to explore Beauxbatons in secret. Then, he stumbles upon a group of Beauxbatons students who are practicing a very different kind of magic, and he gets drawn into their world.
One plot could be that Draco disappears because he's on a secret mission for the Order of the Phoenix. He has to go undercover in the Death Eater ranks and cut off all contact with his friends at Hogwarts to keep them safe. Another idea is that he disappears due to a family curse that suddenly activates, and he has to find a way to break it while being in a hidden magical realm. A third plot could be that Draco fakes his disappearance to start a new life away from the expectations and pressures of the wizarding world.
Maybe in a post - war scenario, Draco is in hiding and a kind - hearted person finds him starving. So they start to secretly feed him, and during this process, a bond forms between them that's more than just about food.
One possible plot could be a comical one where Draco accidentally gets turned into a baby and has to deal with wearing a diaper while his friends try to figure out how to reverse the spell. Another could be a more serious take on his childhood, where wearing a diaper is a symbol of his vulnerability during a difficult time in his family.
One plot could be that after Draco injures Hermione accidentally during a duel in their school days, he feels extremely guilty. He then tries to make it up to her by secretly helping her with her studies and protecting her from other Slytherins who might mock her for being injured. Eventually, they start to understand each other better and form an unlikely friendship.
One interesting plot could be the development of an unexpected friendship between the kidnapped character and Draco. Maybe they start to understand each other's motives and past traumas, leading to a change in their relationship from captor - captive to something more complex.
In a fanfiction plot, it could be that Hermione discovers a new spell that requires a unique form of casting with the fingers. Draco, being knowledgeable about some dark magic that has similarities, tries to help her. Their fingers work in tandem during the spell - casting practice, and this creates an unexpected connection between them. This connection then grows into a friendship that has to overcome the prejudices of their past. For example, Hermione has to deal with the fact that Draco was once a Death Eater supporter, and Draco has to accept Hermione's Muggle - born status in a more positive light.
One interesting plot could be Hermione and Draco forced to work together on a project for the wizarding community. As they spend time together, they start to see each other in a new light and gradually develop feelings. Their families initially oppose the relationship due to their past rivalries at Hogwarts. But through various challenges and misunderstandings, they manage to form a family of their own, with Hermione's intelligence and Draco's family influence creating a unique dynamic.
Another plot could be that the collar has a hidden power. A young witch discovers this power accidentally and she and Draco form an unlikely bond as they try to figure out how to control or use this power for good. It could lead to a lot of character development for both of them as they face challenges together and learn more about each other.
Another interesting plot could be Rose's discovery of Draco's past and how she helps him come to terms with it. She might find out about his family's dark history during the wizarding wars and be a source of light and forgiveness for him.
One interesting plot could be Draco having to hide his 'chosen one' status from his Death Eater family. He might struggle with the conflicting loyalties, torn between his family's dark path and his newfound destiny as the chosen one. This could lead to some intense internal battles and secretive actions as he tries to figure out how to use his new role for good without getting caught by his family.