One idea could be that they are forced into an arranged marriage for some magical political reason. At first, they dislike each other but as they start to understand the other's past and insecurities, they gradually fall in love. For example, Hermione could learn about Draco's fear of not living up to his family's expectations and Draco could see Hermione's struggles in the wizarding world as a Muggle - born.
Another plot could be a time - travel scenario. Hermione accidentally travels back in time and ends up changing some events that lead to Draco having a different outlook on life. This new Draco is more open - minded and they end up getting married in this alternate timeline. Their relationship is then a mix of Hermione's modern - day sensibilities and Draco's altered, more positive view of the wizarding world.
One idea could be them having to deal with the reactions of their friends and family. For example, Harry's friends from Gryffindor might be initially shocked but then come to accept it as they see how happy Draco and Harry are together. Another plot could involve them facing some sort of magical mystery or threat that only their combined skills can solve, which also strengthens their bond as a married couple.
One idea could be that they face opposition from some in the wizarding world who still hold onto the traditional views of pure - blood and half - blood relationships. They then have to fight to prove that their love is stronger than these archaic beliefs. Another plot could involve them having to deal with a new dark threat while also planning their wedding, adding a lot of tension and drama to the story.
In a fanfiction plot, there could be a situation where Hermione and Draco are both cursed. The only way to break the curse is to work together and learn to trust each other completely. They have to rely on each other's unique magical abilities. Along the way, they share their deepest secrets and fears, which brings them closer together. By the time they break the curse, their relationship has transformed from one of enmity to something more like friendship, with the potential for more.
A possible plot is that the boggart takes the form of a combined fear for both of them. It could be a powerful dark wizard who has enslaved the wizarding world, and only Hermione and Draco, with their combined knowledge and skills, can defeat it. As they face this boggart, they learn to trust each other more than they ever thought possible.
In some fanfictions, there could be a time - travel plot where Draco and Hermione from different timelines end up together and Hermione gets pregnant. This would involve dealing with the consequences of changing the timeline as well as their relationship dynamics.
Well, a possible plot could be that Draco and Hermione, as siblings, are both sorted into different houses at Hogwarts. They initially struggle with their loyalty to their houses while also trying to figure out their new relationship. There could also be a plot where they discover a common enemy within the wizarding world who is trying to harm their family, and they must use their combined skills to defeat this foe.
One idea could be that Draco and Hermione start a family in secret at first. Maybe they meet in a post - war setting where they both realize they have more in common than they thought. Their children could inherit a mix of their magical abilities and personalities, leading to unique family dynamics.
A plot could be set post - Hogwarts. Draco and Blaise are trying to redeem their families' reputations in the wizarding world. Hermione, being the brilliant witch she is, is working on some important magical research. Their paths cross when a dark magic artifact resurfaces. Hermione believes it can be used for good if studied properly, while Draco and Blaise are worried it will fall into the wrong hands again. So they team up to protect it and study it.
One idea could be a story where Draco, Harry and Hermione are forced to work together on a special magical project for the Ministry. They start off hating each other but gradually come to respect one another's skills. Another plot could involve them getting trapped in an alternate magical dimension where they have to rely on each other to find their way back. Maybe Draco has some knowledge of the dark magic that created the dimension, Harry has his Gryffindor courage to lead them through dangerous areas, and Hermione uses her vast knowledge to figure out how to break the spell that trapped them.
One plot idea could be that Hermione, while exploring a hidden cove, is turned into a mermaid by a magical spell gone wrong. Draco, who is also there for some mysterious reason, at first teases her but then realizes they need to work together to reverse the spell. They embark on a journey through the underwater world, facing various sea creatures and challenges along the way.