One possible scenario could be that Draco gets tired of the dark side and the expectations in the wizarding world, so he decides to disappear to start a new life in a Muggle city. He might use magic to hide his identity and blend in.
Maybe Draco is forced to disappear because he discovers a dangerous secret. For example, he stumbles upon a plot within the Death Eaters that he doesn't want to be part of. So, to protect himself and his family, he vanishes without a trace. He could be using some sort of ancient spell to cloak his whereabouts.
One possible scenario could be that Draco sacrifices himself to save his family from the Dark Lord. In the wizarding world full of danger, he might make a heroic choice that costs him his life. Another could be in a battle against a new dark force where he is fatally injured while trying to protect Hogwarts.
One possible scenario could be that Draco misbehaves in a way that goes against the rules of the wizarding world or his family's expectations. For example, he might have been caught using dark magic inappropriately, and as a form of punishment, he gets spanked. Another scenario could be that he angers a powerful wizard or witch who decides to discipline him in this way. It could also be a more light - hearted situation where his friends play a prank on him that goes wrong, and he ends up in a situation where he 'gets spanked' as part of the comical chaos.
One possible scenario could be that Draco has a change of heart at Malfoy Manor. He might secretly try to protect Hermione from the other Death Eaters. Maybe he uses his knowledge of the manor's secrets to hide her or mislead the others. For example, he could tell them she escaped through a certain passage when in fact he has her hidden in a secret room.
One possibility could be that Harry is so traumatized by the war that he wants to isolate himself from the wizarding world. He might go into hiding in a remote, Muggle - free location to deal with his inner demons.
One possible plot is that Draco Malfoy discovers he has a non - pureblood ancestor through some ancient family records. This shatters his view of his family's pureblood lineage. He then struggles with whether to keep this a secret or reveal it, fearing the reaction from his family and the pureblood society at Hogwarts.
In many fanfictions, Draco could be injured during a duel. He is a Slytherin, and duels are common in the wizarding world. Maybe he underestimates his opponent and gets seriously hurt.
A plotline could involve Draco's family trying to hide his non - pure - blood origin for generations. When Draco finds out, he could start to question his family's values and actions. He might then try to find out who his non - pure - blood ancestors were and what their story was. Maybe he forms an unlikely alliance with some non - pure - blood characters in Hogwarts as he tries to come to terms with his new identity. There could also be a plot where the discovery of his non - pure - blood status changes his relationship with Harry Potter. Instead of being rivals, they could become allies as Draco realizes the unfairness of the blood - based discrimination in the wizarding world.
One possible plotline could be Draco trying to hide his squib status from his family. He might go to great lengths to fake being a wizard, like using magic - like tricks or relying on others to do magic for him in front of his family. Another plotline could be Draco befriending other squibs and forming a sort of underground community where they support each other and try to prove their worth in the wizarding world. Or, he could be discovered as a squib by his enemies, like Harry Potter and his friends, and instead of the usual animosity, they feel pity and try to help him come to terms with his new reality.
One negative impact could be the misrepresentation of the character. Draco Malfoy is a complex character in the 'Harry Potter' series, and such fanfiction might reduce him to a rather one - dimensional and inappropriate image. It can also make the fan community seem less family - friendly, as spanking is a rather sensitive and not - so - positive topic. This could potentially drive away some fans who are more interested in positive and canon - compliant fan works.
Another possibility is that she focuses on protecting her family, especially Draco. She could be constantly worried about the after - effects of the war on him, like potential revenge from the side that won the war, and spends her time ensuring his safety and future.