Perhaps there's a powerful ancient magical artifact that has the power to change the wizarding world. Draco wants it to restore his family's reputation, Harry wants to make sure it's not misused like the Deathly Hallows, and Hermione wants to study it for the greater good of the magical community. They end up in a race against dark wizards and other interested parties. Along the way, they learn more about each other's motives and fears, and through many adventures and close calls, they decide what to do with the artifact together.
A plot could center around a mysterious magical illness that affects only pure - bloods, half - bloods and Muggle - borns in a unique way. Draco, as a pure - blood, Harry as a half - blood, and Hermione as a Muggle - born are the key to finding the cure. At first, there's a lot of suspicion between them, especially from Draco towards Hermione. But as they research and experiment, they realize that they need to put aside their differences. They travel to different magical locations, encounter various magical creatures and old spells, and in the end, they not only find the cure but also form an unlikely friendship.
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.
A possible plot is a mystery - solving one. There's a strange magical occurrence in Hogwarts that is affecting both Gryffindors and Slytherins. Hermione starts investigating, and she enlists the help of Sirius (who could be a ghost or somehow back in a semi - corporeal form). Harry is naturally drawn to help Hermione, and Draco gets involved because it might affect his family's standing. As they dig deeper, they find out that it's an ancient curse set by a long - forgotten wizard, and they have to find a way to break it using their combined skills and knowledge.
One plot idea could be a story where Blaise and Draco have to team up with Harry and Hermione for a special magical tournament. They start off as reluctant allies but gradually learn to respect each other's skills. Another could be a mystery - something strange is happening at Hogwarts and the four of them must put aside their differences to solve it. For example, students are losing their magical abilities one by one, and they suspect a dark magic artifact hidden in the castle.
One idea could be that their child discovers a hidden magic that neither of their parents were aware of. This magic could be a key to solving an ancient mystery in the wizarding world. Another plot could be the child having to navigate the social difficulties of being the offspring of two former rivals, facing prejudice from some pure - blood families who still hold grudges against Hermione for being a Muggle - born.
One plot idea could be that Draco and Hermione are rival CEOs in the wizarding business world. They start off hating each other due to their different management styles and company loyalties. But then, they are forced to work together on a project to save the wizarding economy. As they spend time together, they begin to understand and respect each other, and eventually fall in love. Another idea is that they are co - CEOs of a newly formed, progressive wizarding company that aims to bridge the gap between pure - blood and Muggle - born wizards in the business realm. Along the way, they face opposition from traditionalist wizards but they fight it together and their relationship deepens.
One idea could be that Draco and Hermione's baby has unique magical abilities that draw the attention of both the wizarding world's good and bad elements. The baby might be able to communicate with magical creatures in an extraordinary way, leading to adventures where they have to protect the baby from those who want to use its power for evil.
A possible plot is that Draco, who is in Slytherin, discovers a hidden secret about Hermione's family that has ties to Slytherin. This makes him see her in a new light and they start to form an unlikely alliance. They could then face challenges from their respective houses. Another plot idea is that in an alternate universe, Hermione is sorted into Slytherin and she and Draco become friends and then something more, as they strive to change the negative perception of Slytherin from within.
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.
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.
In a post - war wizarding world, there is a new potion that has some unexpected side effects. Draco and Hermione accidentally consume it. As a result, Hermione becomes pregnant. They are both shocked and confused. But as they navigate through this strange situation, they find that they have more in common than they thought. They start to bond over their shared experiences in the war and their hopes for the future of their child.
Well, a plot might involve Draco being at the nightclub undercover for some sort of mission and Hermione is there just to have a good time. They cross paths and Draco has to keep his identity hidden from Hermione, but she starts to suspect something. This creates a lot of tension and mystery. Or perhaps there's a magical event at the nightclub that only they can solve together because of their unique skills and knowledge. Also, it could be that the nightclub is a place where they both discover a new side of themselves and start to see each other in a different light.