What could be the plot of a fanfiction where Harry is Lucius' slave?

I'm not sure if there is such a specific fanfiction. There are a vast number of fanfictions in the Harry Potter fandom, and while there could be one with this premise, it's not a common or well - known trope in the mainstream ones. However, in the world of fan - created content, anything is possible.

One possible plot could be that they got married for political reasons within the wizarding world. They keep it a secret to avoid the outrage of their respective friends and families. And as they live together secretly, they start to understand each other better than they ever thought they could, gradually changing their views of each other.

One possible plot could be that Harry grows up in the Malfoy family. He might be treated differently from Draco, as he has different values. This could lead to internal family conflicts. Harry could try to use his influence within the family to change their dark views. Maybe he secretly helps the Order of the Phoenix while still being part of the Malfoy family.

It could be that Lucius is under the orders of Voldemort. Voldemort wants Harry alive but in his control, so he sends Lucius to kidnap Harry. Lucius might then keep Harry in some secret location, perhaps an old Malfoy manor cellar, guarded by dark magic spells. Harry would then have to find a way to escape, maybe by using his own unique magic abilities or with the help of his friends who eventually figure out where he is.

One possible plot could be that Harry discovers some sort of ancient magic or prophecy that links him to Voldemort and Lucius in a way that makes them mates. This could lead to a struggle within Harry as he tries to come to terms with his new identity and the expectations that come with it.

The plot might start with Harry having strange dreams or feelings that lead him to realize his connection to Lucius and Severus. As they come together, they find that they have to hide their relationship from the Death Eaters (in Lucius' case) and Dumbledore's side (initially, as it's so unexpected). They could also be on a quest to find out the origin of this bond, which might be related to some ancient magic. During this journey, they learn about each other's pasts, like Severus' love for Harry's mother and Lucius' family history, and how it all ties into their present relationship.

Well, it could start with some sort of magical encounter that binds them in an unexpected way. Maybe Harry gets caught in a spell that makes him subservient to Lucius. Then Lucius has to deal with this new situation and his own feelings towards Harry.

One possible plot could be that Harry, for some reason, has to take on the role of a healer for Lucius. Maybe Lucius gets seriously injured during a battle or some dark magic backfires on him. Harry, with his knowledge of magic and his good heart, decides to help Lucius despite their past differences. This could lead to a series of interactions where they both learn more about each other and perhaps even form an unlikely alliance.

Often, a plot twist might involve Hermione uncovering a secret that Lucius has been hiding. This could be related to some dark magic he's involved in or a family secret. This discovery could then give Hermione some leverage over Lucius. Or perhaps there's a twist where other characters from the Harry Potter universe get involved. Like Harry and Ron coming to rescue Hermione, but she refuses to leave because she's in the middle of a complex plan to bring down Lucius from the inside.

It could be that Lucius accidentally deages Snape while trying out a new, experimental spell. Then, the story could revolve around how Snape has to deal with being 16 again in a world that has moved on. He might struggle with his memories of the future and how to interact with people who knew him as an adult. For example, he'd have to face his former students who are now his peers, and that could create some really interesting and complex situations in the fanfiction.