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.
A possible plot is that during the kidnapping, the kidnapped character and Draco are forced to work together to escape from another threat. This could lead to them relying on each other's skills, for example, the kidnapped character's knowledge of magic spells that Draco doesn't know, and Draco's knowledge of the Malfoy Manor's secret passages.
Perhaps a plot where the kidnapped person discovers Draco's real reasons for the kidnapping are not as malicious as they seem at first. It could be related to protecting them from a greater danger in the wizarding world, like a dark wizard who has a vendetta against the kidnapped character's family.
A common plot in Draco Malfoy kidnapped fanfiction is that Draco kidnaps a fellow student to get information. He suspects that this student has knowledge about a hidden magical artifact or a secret spell that could help him gain power or status. Maybe he's fallen from grace in the Slytherin house or among the Death Eaters, and he thinks this piece of information will redeem him. Or perhaps he kidnaps someone who he believes has seen something they shouldn't have, like a Slytherin plot against the school, and he wants to keep them quiet.
In some Draco Malfoy Marriage Law fanfiction, the plot might revolve around the political implications of the marriage law. Draco, being from a prominent pure - blood family, could be forced into a marriage to strengthen family alliances. This could lead to a complex story of love vs. duty, as he might actually have feelings for someone else not approved by his family.
One interesting plot could be a story where Draco Malfoy, after the war, is trying to redeem himself. Nymphadora Tonks, through some magical accident or plot device, has to work with him. They start off hating each other due to their different allegiances during the war. But as they face challenges together, like a new dark magic threat emerging, they gradually learn to respect and even like each other. Their different magical abilities - Draco's Slytherin cunning and Tonks' Metamorphmagus skills - could be used in creative ways to overcome the obstacles.
There could be a fanfiction where Scorpius and Draco go on a magical adventure together. Maybe they discover an ancient magic that was lost for centuries and have to keep it a secret from the wizarding world. This would explore their relationship as father - son and their courage in the face of danger.
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.
A great plot could involve Draco falling in love with someone from a completely different world, like a Muggle - born witch. Since this would be scandalous in the wizarding world, they keep their marriage a secret. Their relationship could be full of challenges as they try to bridge the gap between their two worlds, with Draco having to constantly hide his true feelings and relationship from his pure - blooded family and friends.
One popular plot is the redemption arc of Draco through his friendship. His best friend, often a more morally upright character like a Gryffindor, helps him see the error of his ways. For instance, they might work together on a project that exposes Draco to different ways of thinking and living in the wizarding world.
One idea could be a story where Scorpius discovers a long - hidden family secret that Draco has been trying to protect him from. It could involve some dark magic from their family's past.
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.
Often, the main characters also include the family members of the kidnapped person. If it's an original character, the writer might create a family for them. Their family could be searching for them, and this could add another layer of drama to the story. Maybe the kidnapped character's sister or brother has some special abilities that they use to try and find their kidnapped sibling.